{"id":305862,"date":"2024-01-13T16:24:32","date_gmt":"2024-01-13T09:24:32","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=305862"},"modified":"2024-01-13T16:24:32","modified_gmt":"2024-01-13T09:24:32","slug":"the-tich-hinh-cau","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/the-tich-hinh-cau\/","title":{"rendered":"C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch m\u1eb7t c\u1ea7u, th\u1ec3 t\u00edch kh\u1ed1i c\u1ea7u"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">M\u0103\u0323t c\u00e2\u0300u, kh\u00f4\u0301i c\u00e2\u0300u la\u0300 nh\u01b0\u0303ng kha\u0301i ni\u00ea\u0323m c\u01b0\u0323c ky\u0300 quen thu\u00f4\u0323c trong hi\u0300nh ho\u0323c trung ho\u0323c. Tuy nhi\u00ean, kh\u00f4ng pha\u0309i ai cu\u0303ng nh\u01a1\u0301 chi\u0301nh xa\u0301c \u0111\u01b0\u01a1\u0323c c\u00f4ng th\u01b0\u0323c ti\u0301nh di\u00ea\u0323n ti\u0301ch m\u0103\u0323t c\u00e2\u0300u, th\u00ea\u0309 thi\u0301ch kh\u00f4\u0301i c\u00e2\u0300u. Th\u00f4ng qua ba\u0300i vi\u00ea\u0301t \u0111\u00e2y, Hoa\u0300ng Ha\u0300 Mobile se\u0303 cung c\u00e2\u0301p c\u00f4ng th\u01b0\u0301c th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u \u0111\u00ea\u0309 ba\u0323n co\u0301 th\u00ea\u0309 tham kha\u0309o va\u0300 a\u0301p du\u0323ng trong ca\u0301c ba\u0300i toa\u0301n hi\u0300nh ho\u0323c.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">\u0110i\u0323nh nghi\u0303a m\u0103\u0323t c\u00e2\u0300u la\u0300 gi\u0300? Kh\u00f4\u0301i c\u00e2\u0300u la\u0300 gi\u0300? Hi\u0300nh c\u00e2\u0300u la\u0300 gi\u0300?\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Tr\u01b0\u01a1\u0301c khi ti\u0300m hi\u00ea\u0309u c\u00f4ng th\u01b0\u0301c ti\u0301nh th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u la\u0300 gi\u0300 thi\u0300 ba\u0323n pha\u0309i n\u0103\u0301m ro\u0303 \u0111\u01b0\u01a1\u0323c ca\u0301c kha\u0301i ni\u00ea\u0323m va\u0300 \u0111i\u0323nh nghi\u0303a v\u00ea\u0300 m\u0103\u0323t c\u00e2\u0300u, kh\u00f4\u0301i c\u00e2\u0300u va\u0300 hi\u0300nh c\u00e2\u0300u. Trong kh\u00f4ng gian hi\u0300nh ho\u0323c ba chi\u00ea\u0300u, khi m\u00f4\u0323t n\u01b0\u0309a hi\u0300nh tro\u0300n co\u0301 t\u00e2m O, ba\u0301n ki\u0301nh R quay m\u00f4\u0323t vo\u0300ng xung \u0111\u01b0\u01a1\u0300ng ki\u0301nh co\u0301 \u0111\u00f4\u0323 da\u0300i AB \u0111\u01b0\u01a1\u0323c c\u00f4\u0301 \u0111i\u0323nh thi\u0300 ra \u0111\u01b0\u01a1\u0323c m\u00f4\u0323t hi\u0300nh c\u00e2\u0300u. Trong \u0111o\u0301 bao g\u00f4\u0300m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ph\u00e2\u0309n n\u01b0\u0309a \u0111\u01b0\u01a1\u0300ng tro\u0300n khi quay la\u0300 ph\u00e2\u0300n m\u00f4\u0323t m\u0103\u0323t c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">T\u00e2m O chi\u0301nh la\u0300 t\u00e2m cu\u0309a hi\u0300nh c\u00e2\u0300u v\u01a1\u0301i ba\u0301n ki\u0301nh la\u0300 R cu\u0309a m\u0103\u0323t c\u00e2\u0300u ho\u0103\u0323c hi\u0300nh c\u00e2\u0300u \u0111o\u0301.\u00a0<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-306308 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-1.jpg\" alt=\"the-tich-hinh-cau-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Kha\u0301i ni\u00ea\u0323m m\u0103\u0323t c\u00e2\u0300u la\u0300 kh\u00f4ng gian t\u00e2\u0323p nh\u01b0\u0303ng \u0111i\u00ea\u0309m ca\u0301ch \u0111\u00ea\u0300u t\u00e2m O hi\u0300nh c\u00e2u v\u01a1\u0301i m\u00f4\u0323t khoa\u0309nh ca\u0301ch ba\u0301n ki\u0301nh R kh\u00f4ng \u0111\u00f4\u0309i. Trong tr\u01b0\u01a1\u0300ng h\u01a1\u0323p na\u0300y nghi\u0303a la\u0300 R = OA.\u00a0<\/span><span style=\"font-weight: 400;\">Hi\u0300nh c\u00e2\u0300u co\u0301 ti\u0301nh ch\u00e2\u0301t la\u0300 hi\u0300nh co\u0301 m\u00f4\u0323t tru\u0323c \u0111\u00f4\u0301i x\u01b0\u0301ng la\u0300 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng b\u00e2\u0301t ky\u0300 co\u0301 th\u00ea\u0309 giao nhau khi \u0111i qua t\u00e2m cu\u0309a hi\u0300nh c\u00e2\u0300u. Lu\u0301c na\u0300y, ba\u0323n chi\u0309 c\u00e2\u0300n xoay qua\u0309 c\u00e2\u0300u xung quanh ph\u00e2\u0300n tru\u0323c na\u0300y \u01a1\u0309 b\u00e2\u0301t ky\u0300 go\u0301c \u0111\u00f4\u0323 na\u0300o cu\u0303ng th\u00e2\u0301y \u0111\u01b0\u01a1\u0323c chi\u0301nh qua\u0309 c\u00e2\u0300u na\u0300y la\u0300 chi\u0301nh no\u0301.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u00ean ca\u0323nh \u0111o\u0301, ph\u00e2\u0300n m\u0103\u0323t ph\u0103\u0309ng pha\u0309n xa\u0323 \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 m\u0103\u0323t ph\u0103\u0309ng \u0111\u01b0\u01a1\u0323c c\u0103\u0301t hi\u0300nh v\u00ea\u0300 \u0111\u01b0\u01a1\u0323c \u0111\u00ea\u0300 c\u00e2\u0323p th\u00f4ng qua t\u00e2m cu\u0309a hi\u0300nh va\u0300 chia qua\u0309 c\u00e2\u0300u tha\u0300nh hai n\u01b0\u0309a b\u0103\u0300ng nhau.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">C\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch m\u0103\u0323t c\u00e2\u0300u va\u0300 th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u la\u0300 gi\u0300?\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">D\u01b0\u01a1\u0301i \u0111\u00e2y la\u0300 c\u00f4ng th\u01b0\u0301c ti\u0301nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u va\u0300 th\u00ea\u0309 ti\u0301ch c\u1ee7a h\u00ecnh c\u1ea7u ma\u0300 ba\u0323n n\u00ean bi\u00ea\u0301t:\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">C\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Theo \u0111i\u0323nh nghi\u0303a trong hi\u0300nh ho\u0323c, di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u se\u0303 \u0111\u01b0\u01a1\u0323c xa\u0301c \u0111i\u0323nh b\u0103\u0300ng 4 l\u00e2\u0300n di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n l\u01a1\u0301n hay ti\u0301ch 4 l\u00e2\u0300n cu\u0309a h\u0103\u0300ng s\u00f4\u0301 Pi cu\u0300ng v\u01a1\u0301i ba\u0301n ki\u0301nh R \u0111\u01b0\u01a1\u0323c bi\u0300nh ph\u01b0\u01a1ng cu\u0309a kh\u00f4\u0301i c\u00e2\u0300u. C\u00f4ng th\u01b0\u0301c t\u00f4\u0309ng qua\u0301t \u0111o\u0301 la\u0300: <\/span><b>S= 4<\/b><b>\u03c0. r^2=\u03c0.d2.\u00a0 <\/b><span style=\"font-weight: 400;\">Ca\u0301c y\u00ea\u0301u t\u00f4\u0301 trong \u0111o\u0301 bao g\u00f4\u0300m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">S \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">r \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 ba\u0301n ki\u0301nh cu\u0309a m\u0103\u0323t c\u00e2\u0300u hay cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">d \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 \u0111\u01b0\u01a1\u0300ng ki\u0301nh cu\u0309a m\u0103\u0323t c\u00e2\u0300u hay cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u03c0 \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 h\u0103\u0300ng s\u00f4\u0301, co\u0301 gia\u0301 tri\u0323 x\u00e2\u0301p xi\u0309 3.14.\u00a0<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-306309 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-2.jpg\" alt=\"the-tich-hinh-cau-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3><span style=\"font-weight: 400;\">C\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch xung quanh cu\u0309a hi\u0300nh c\u00e2\u0300u\u00a0<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00ea\u0309 co\u0301 th\u00ea\u0309 xa\u0301c \u0111i\u0323nh \u0111\u01b0\u01a1\u0323c di\u00ea\u0323n ti\u0301ch xung quanh cu\u0309a hi\u0300nh c\u00e2\u0300u, ba\u0323n co\u0301 th\u00ea\u0309 a\u0301p du\u0323ng c\u00f4ng th\u01b0\u0301c: <\/span><b>Sxq= 4<\/b><b>\u03c0r^2. <\/b><span style=\"font-weight: 400;\">Ca\u0301c y\u00ea\u0301u t\u00f4\u0301 trong c\u00f4ng th\u01b0\u0301c bao g\u00f4\u0300m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Sxq \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 ph\u00e2\u0300n di\u00ea\u0323n ti\u0301ch xung quanh cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u03c0 \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 h\u0103\u0300ng s\u00f4\u0301, co\u0301 gia\u0301 tri\u0323 x\u00e2\u0301p xi\u0309 3.14.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">r \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-306310 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-3.jpg\" alt=\"the-tich-hinh-cau-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Khi s\u01b0\u0309 du\u0323ng c\u00f4ng th\u01b0\u0301c, na\u0300y ba\u0323n chi\u0309 c\u00e2\u0300n nh\u00e2n ba\u0301n ki\u0301nh R hi\u0300nh c\u00e2\u0300u v\u01a1\u0301i 2, r\u00f4\u0300i \u0111\u01b0\u01a1\u0323c k\u00ea\u0301t qua\u0309 nh\u00e2n v\u01a1\u0301i s\u00f4\u0301 \u03c0 \u0111\u00ea\u0309 co\u0301 th\u00ea\u0309 ti\u0301nh \u0111\u01b0\u01a1\u0323c di\u00ea\u0323n ti\u0301ch S xung quanh cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">C\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u\u00a0<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">V\u00ea\u0300 kha\u0301i ni\u00ea\u0323m hi\u0300nh ho\u0323c, th\u00ea\u0309 ti\u0301ch c\u1ee7a h\u00ecnh c\u1ea7u hay co\u0300n go\u0323i la\u0300 kh\u00f4\u0301i c\u00e2\u0300u \u0111\u01b0\u01a1\u0323c xa\u0301c \u0111i\u0323nh b\u0103\u0300ng b\u00f4\u0301n ph\u00e2\u0300n ba cu\u0309a s\u00f4\u0301 Pi nh\u00e2n v\u01a1\u0301i ba\u0301n ki\u0301nh l\u00e2\u0323p ph\u01b0\u01a1ng cu\u0309a hi\u0300nh c\u00e2\u0300u. Do \u0111o\u0301, \u0111\u00ea\u0309 co\u0301 th\u00ea\u0309 ti\u0301nh \u0111\u01b0\u01a1\u0323c th\u00ea\u0309 ti\u0301ch cu\u0309a kh\u00f4\u0301i c\u00e2\u0300u thi\u0300 ba\u0323n chi\u0309 c\u00e2\u0300n pha\u0309i ti\u0300m \u0111\u01b0\u01a1\u0323c ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u ho\u0103\u0323c \u0111\u01b0\u01a1\u0300ng ki\u0301nh hi\u0300nh c\u00e2\u0300u r\u00f4\u0300i a\u0301p du\u0323ng va\u0300o c\u00f4ng th\u01b0\u0301c <\/span><b>V= 4\/3 x <\/b><b>\u03c0<\/b><b> x r^3<\/b><span style=\"font-weight: 400;\">. <\/span><span style=\"font-weight: 400;\">Ca\u0301c y\u00ea\u0301u t\u00f4\u0301 trong c\u00f4ng th\u01b0\u0301c bao g\u00f4\u0300m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">V \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 th\u00ea\u0309 ti\u0301ch cu\u0309a hi\u0300nh c\u00e2\u0300u co\u0301 \u0111\u01a1n vi\u0323 m3.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u03c0 \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 h\u0103\u0300ng s\u00f4\u0301, co\u0301 gia\u0301 tri\u0323 x\u00e2\u0301p xi\u0309 3.14.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">r \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">d \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a la\u0300 ba\u0301n ki\u0301nh cu\u0309a m\u0103\u0323t c\u00e2\u0300u hay hi\u0300nh c\u00e2\u0300u.\u00a0<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306311 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-4.jpg\" alt=\"the-tich-hinh-cau-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2><span style=\"font-weight: 400;\">H\u01b0\u01a1\u0301ng d\u00e2\u0303n chi ti\u00ea\u0301t ca\u0301c b\u01b0\u01a1\u0301c ti\u0301nh th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u00ea\u0309 ti\u0301nh \u0111\u01b0\u01a1\u0323c th\u00ea\u0309 ti\u0301ch thi\u0300 ba\u0323n c\u00e2\u0300n th\u01b0\u0323c hi\u00ea\u0323n ca\u0301c b\u01b0\u01a1\u0301c cu\u0323 th\u00ea\u0309 d\u01b0\u01a1\u0301i \u0111\u00e2y:\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u01b0\u01a1\u0301c 1: \u0110\u00e2\u0300u ti\u00ean, vi\u00ea\u0301t ra c\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh th\u00ea\u0309 ti\u0301ch c\u1ee7a hi\u0300nh c\u00e2\u0300u ra gi\u00e2\u0301y \u0111o\u0301 la\u0300: <\/span><b>V = \u2074\u2044\u2083\u03c0.r\u00b3.\u00a0<\/b><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306312 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-5.jpg\" alt=\"the-tich-hinh-cau-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">B\u01b0\u01a1\u0301c 2: Sau \u0111o\u0301, ba\u0323n c\u00e2\u0300n \u0111o\u0323c th\u00e2\u0323t ky\u0303 \u0111\u00ea\u0300 ba\u0300i \u0111\u00ea\u0309 ti\u0300m ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u. N\u00ea\u0301u \u0111\u00ea\u0300 \u0111a\u0303 cung c\u00e2\u0301p th\u00f4ng tin ba\u0301n ki\u0301nh s\u0103\u0303n thi\u0300 chi\u0309 c\u00e2\u0300n ghi ra gi\u00e2\u0301y. Tuy nhi\u00ean, n\u00ea\u0301u \u0111\u00ea\u0300 cho th\u00f4ng tin v\u00ea\u0300 \u0111\u01b0\u01a1\u0300ng ki\u0301nh cu\u0309a hi\u0300nh tro\u0300n thi\u0300 ba\u0323n co\u0301 th\u00ea\u0309 s\u01b0\u0309 du\u0323ng c\u00f4ng th\u01b0\u0301c th\u00ea\u0309 ti\u0301ch <\/span><b>V = 1\u20446\u03c0.d\u00b3<\/b><span style=\"font-weight: 400;\"> \u0111\u00ea\u0309 ti\u0301nh. Ba\u0323n cu\u0303ng co\u0301 th\u00ea\u0309 s\u01b0\u0309 du\u0323ng ph\u01b0\u01a1ng pha\u0301p \u0111\u01b0\u01a1\u0300ng ki\u0301nh chia \u0111\u00f4i \u0111\u00ea\u0309 ra \u0111\u01b0\u01a1\u0323c k\u00ea\u0301t qua\u0309 ba\u0301n ki\u0301nh r\u00f4\u0300i ti\u00ea\u0301n ha\u0300nh a\u0301p du\u0323ng c\u00f4ng th\u01b0\u0301c \u01a1\u0309 b\u01b0\u01a1\u0301c 1.\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-6.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-6-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-6-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306300 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-6.jpg\" alt=\"the-tich-hinh-cau-6\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-6.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-6-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-6-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Trong tr\u01b0\u01a1\u0300ng h\u01a1\u0323p kho\u0301 h\u01a1n khi \u0111\u00ea\u0300 ba\u0300i chi\u0309 cho ba\u0323n th\u00f4ng tin v\u00ea\u0300 di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u S thi\u0300 ba\u0323n hoa\u0300n toa\u0300n co\u0301 th\u00ea\u0309 ti\u0300m ba\u0301n ki\u0301nh hi\u0300nh tro\u0300n b\u0103\u0300ng ca\u0301ch ti\u00ea\u0301n ha\u0300nh l\u00e2\u0301y di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u chia cho 4pi. Sau \u0111o\u0301, ba\u0323n se\u0303 ti\u0301nh c\u0103n b\u00e2\u0323c hai cu\u0309a k\u00ea\u0301t qua\u0309 v\u01b0\u0300a ti\u0301nh la\u0300 ra \u0111\u01b0\u01a1\u0323c.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u01b0\u01a1\u0301c 3: Ti\u00ea\u0301p theo, ba\u0323n chi\u0309 c\u00e2\u0300n ti\u00ea\u0301n ha\u0300nh ti\u0301nh lu\u0303y th\u01b0\u0300a cu\u0309a ba\u0301n ki\u0301nh r b\u0103\u0300ng vi\u00ea\u0323c s\u01b0\u0309 du\u0323ng ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh tro\u0300n nh\u00e2n ba l\u00e2\u0300n chi\u0301nh no\u0301 ho\u0103\u0323c n\u00e2ng l\u00ean s\u00f4\u0301 mu\u0303 b\u0103\u0300ng ba.\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-7.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-7-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-7-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306301 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-7.jpg\" alt=\"the-tich-hinh-cau-7\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-7.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-7-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-7-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">B\u01b0\u01a1\u0301c 4: Ba\u0323n se\u0303 thay th\u00ea\u0301 gia\u0301 tri\u0323 cu\u0309a ba\u0301n ki\u0301nh lu\u0303y th\u01b0\u0300a c\u0103n b\u00e2\u0323c ba va\u0300o c\u00f4ng th\u01b0\u0301c th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u \u0111\u00ea\u0309 ph\u01b0\u01a1ng tri\u0300nh tr\u01a1\u0309 n\u00ean go\u0323n h\u01a1n.\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-8.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-8-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-8-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306302 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-8.jpg\" alt=\"the-tich-hinh-cau-8\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-8.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-8-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-8-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">B\u01b0\u01a1\u0301c 5: Ti\u00ea\u0301n ha\u0300nh \u0111\u0103\u0323t h\u0103\u0300ng s\u00f4\u0301 pi va\u0300o trong phe\u0301p tinh va\u0300 nh\u00e2n gia\u0301 tri\u0323 x\u00e2\u0301p xi\u0309 3.14 v\u01a1\u0301i 4\/3 ho\u0103\u0323c \u0111\u00ea\u0309 nguy\u00ean ky\u0301 hi\u00ea\u0323u \u03c0 trong ba\u0300i theo da\u0323ng \u0111o\u0301 la\u0300 V= 4\/3\u03c0 la\u0300 \u0111a\u0303 hoa\u0300n tha\u0300nh.\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-9.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-9-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-9-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306303 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-9.jpg\" alt=\"the-tich-hinh-cau-9\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-9.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-9-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-9-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2><span style=\"font-weight: 400;\">Vi\u0300 sao di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u b\u0103\u0300ng 4 l\u00e2\u0300n di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n l\u01a1\u0301n?\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Ngoa\u0300i c\u00f4ng th\u01b0\u0301c ti\u0301nh th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u, m\u00f4\u0323t s\u00f4\u0301 ng\u01b0\u01a1\u0300i co\u0300n th\u0103\u0301c m\u0103\u0301c vi\u0300 sao di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u \u0111\u01b0\u01a1\u0323c ti\u0301nh b\u0103\u0300ng 4 di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n l\u01a1\u0301n. Theo ly\u0301 thuy\u00ea\u0301t, di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u la\u0300 t\u00f4\u0309ng cu\u0309a di\u00ea\u0323n ti\u0301ch nh\u01b0\u0303ng hi\u0300nh tro\u0300n \u0111\u01b0\u01a1\u0323c ta\u0323o tha\u0300nh b\u00ea\u0300 m\u0103\u0323t cu\u0309a hi\u0300nh c\u00e2\u0300u. Do \u0111o\u0301, n\u00ea\u0301u ba\u0323n n\u0103\u0301m \u0111\u01b0\u01a1\u0323c c\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n thi\u0300 ba\u0323n se\u0303 ti\u0301nh toa\u0301n \u0111\u01b0\u01a1\u0323c ph\u00e2\u0300n di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n \u0111o\u0301 la\u0300 <\/span><b>S= <\/b><b>\u03c0. r^2, <\/b><span style=\"font-weight: 400;\">trong \u0111o\u0301 S \u0111\u01b0\u01a1\u0323c go\u0323i la\u0300 di\u00ea\u0323n ti\u0301ch hi\u0300nh tro\u0300n, r \u0111\u01b0\u01a1\u0323c go\u0323i la\u0300 ba\u0301n ki\u0301nh hi\u0300nh tro\u0300n. Khi xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u, ta se\u0303 ti\u0301nh toa\u0300n b\u00f4\u0323 t\u00f4\u0309ng cu\u0309a di\u00ea\u0323n ti\u0301ch ca\u0301c hi\u0300nh tro\u0323n \u0111\u01b0\u01a1\u0323c ta\u0323o tha\u0300nh t\u01b0\u0300 b\u00ea\u0300 m\u0103\u0323t cu\u0309a hi\u0300nh c\u00e2\u0300u. M\u00f4\u0303i hi\u0300nh tro\u0300n co\u0301 tr\u00ean b\u00ea\u0300 m\u0103\u0323t hi\u0300nh c\u00e2\u0300u se\u0303 co\u0301 cu\u0300ng ba\u0301n ki\u0301nh n\u00ean co\u0301 th\u00ea\u0309 go\u0323i ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh tro\u0300n ky\u0301 hi\u00ea\u0323u R. Ph\u00e2\u0300n di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n tr\u00ean m\u00f4\u0323t b\u00ea\u0300 m\u0103\u0323t hi\u0300nh c\u00e2\u0300u \u0111\u01b0\u01a1\u0323c ky\u0301 hi\u00ea\u0323u la\u0300 <\/span><b>S1= \u03c0. r^2.<\/b><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-10.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-10-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-10-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306304 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-10.jpg\" alt=\"the-tich-hinh-cau-10\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-10.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-10-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-10-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Di\u00ea\u0323n ti\u0301ch cu\u0309a ph\u00e2\u0300n m\u0103\u0323t c\u00e2\u0300u co\u0301 c\u00e2\u0301u ta\u0323o t\u01b0\u0300 4 hi\u0300nh tro\u0300n se\u0303 ta\u0323o ra m\u00f4\u0323t m\u0103\u0323t ph\u0103\u0309ng. B\u01a1\u0309i t\u00e2\u0301t ca\u0309 ca\u0301c hi\u0300nh tro\u0300n na\u0300y \u0111\u00ea\u0300u co\u0301 cu\u0300ng m\u00f4\u0323t ba\u0301n ki\u0301nh n\u00ean t\u00f4\u0309ng di\u00ea\u0323n ti\u0301ch cu\u0309a 4 hi\u0300nh tro\u0300n na\u0300y se\u0303 b\u0103\u0300ng S1+S2+S3+S4= 4\u03c0R^2.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Chi\u0301nh vi\u0300 v\u00e2\u0323y, co\u0301 th\u00ea\u0309 no\u0301i r\u0103\u0300ng di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u se\u0303 b\u0103\u0300ng 4 l\u00e2\u0300n cu\u0309a di\u00ea\u0323n ti\u0301ch cu\u0309a hi\u0300nh tro\u0300n l\u01a1\u0301n \u0111\u01b0\u01a1\u0323c xa\u0301c \u0111i\u0323nh v\u01a1\u0301i c\u00f4ng th\u01b0\u0301c <\/span><b>S = 4\u03c0R^2. <\/b><span style=\"font-weight: 400;\">V\u01a1\u0301i c\u00f4ng th\u01b0\u0301c na\u0300y \u0111a\u0303 co\u0301 th\u00ea\u0309 ch\u01b0\u0301ng minh \u0111\u01b0\u01a1\u0323c ro\u0303 ra\u0300ng trong vi\u00ea\u0323c a\u0301p du\u0323ng \u0111i\u0323nh ly\u0301 ti\u0301nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Vi\u0300 sao di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u b\u0103\u0300ng 4 l\u00e2\u0300n h\u0103\u0300ng s\u00f4\u0301 \u03c0 nh\u00e2n bi\u0300nh ph\u01b0\u01a1ng ba\u0301n ki\u0301nh R?\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Ngoa\u0300i c\u00f4ng th\u01b0\u0301c th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u \u0111\u01b0\u01a1\u0323c n\u00eau tr\u00ean thi\u0300 m\u00f4\u0323t s\u00f4\u0301 ng\u01b0\u01a1\u0300i th\u0103\u0301c m\u0103\u0301c ca\u0301c b\u01b0\u01a1\u0301c ti\u0301nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u v\u01a1\u0301i c\u00f4ng th\u01b0\u0301c: <\/span><b>S= 4<\/b><b>\u03c0. r^2.\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u0110\u00e2\u0300u ti\u00ean, c\u00e2\u0300n xa\u0301c \u0111i\u0323nh \u0111\u01b0\u01a1\u0323c ba\u0301n ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u th\u00f4ng qua \u0111\u01b0\u01a1\u0300ng ki\u0301nh cu\u0309a hi\u0300nh c\u00e2\u0300u ho\u0103\u0323c ba\u0301n ki\u0301nh \u0111\u01b0\u01a1\u0323c \u0111o tr\u01b0\u0323c ti\u00ea\u0301p.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ti\u00ea\u0301p theo ba\u0301n ki\u0301nh R bi\u0300nh h\u01b0\u01a1ng b\u0103\u0300ng ca\u0301ch nh\u00e2n 2 l\u00e2\u0300n ba\u0301n ki\u0301nh. L\u01b0u y\u0301, ph\u00e2\u0300n di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u la\u0300 t\u00f4\u0309ng t\u00e2\u0301t ca\u0309 di\u00ea\u0323n ti\u0301ch ca\u0301c hi\u0300nh tro\u0300n l\u01a1\u0301n v\u01a1\u0301i cu\u0300ng \u0111\u00f4\u0323 da\u0300i ba\u0301n ki\u0301nh R.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">S\u01b0\u0309 du\u0323ng c\u00f4ng th\u01b0\u0301c xa\u0301c \u0111i\u0323nh di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u \u0111o\u0301 la\u0300 <\/span><b>S= 4<\/b><b>\u03c0. r^2.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Cu\u00f4\u0301i cu\u0300ng s\u01b0\u0309 du\u0323ng c\u00f4ng th\u01b0\u0301c tr\u00ean ti\u0301ch nh\u00e2n v\u01a1\u0301i s\u00f4\u0301 4 va\u0300 h\u0103\u0300ng s\u00f4\u0301 Pi cu\u0300ng bi\u0300nh ph\u01b0\u01a1ng \u0111\u00f4\u0323 da\u0300i ba\u0301n ki\u0301nh R \u0111\u00ea\u0309 co\u0301 th\u00ea\u0309 ti\u0301nh \u0111\u01b0\u01a1\u0323c di\u00ea\u0323n ti\u0301ch cu\u0309a m\u0103\u0323t c\u00e2\u0300u.\u00a0<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-11-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-11-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-11-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-306313 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-11-1.jpg\" alt=\"the-tich-hinh-cau-11\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-11-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-11-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-11-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2><span style=\"font-weight: 400;\">M\u00f4\u0301i quan h\u00ea\u0323 gi\u01b0\u0303a ba\u0301n ki\u0301nh R va\u0300 th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Th\u1ec3 t\u00edch hi\u0300nh c\u1ea7u l\u00e0 l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t m\u00e0 kh\u1ed1i c\u1ea7u chi\u1ebfm gi\u1eef. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o b\u00e1n k\u00ednh c\u1ee7a kh\u1ed1i c\u1ea7u. B\u00e1n k\u00ednh l\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb t\u00e2m kh\u1ed1i c\u1ea7u \u0111\u1ebfn m\u1ed9t \u0111i\u1ec3m b\u1ea5t k\u1ef3 tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a kh\u1ed1i c\u1ea7u. C\u00f4ng th\u1ee9c t\u00ednh th\u1ec3 t\u00edch kh\u1ed1i c\u1ea7u l\u00e0: <\/span><b>V= 4\/3 x <\/b><b>\u03c0<\/b><b> x r^3<\/b><span style=\"font-weight: 400;\">, co\u0301 ca\u0301c y\u00ea\u0301u t\u00f4\u0301 bao g\u00f4\u0300m:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">V \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a l\u00e0 th\u1ec3 t\u00edch cu\u0309a kh\u1ed1i c\u1ea7u<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">r \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a l\u00e0 b\u00e1n k\u00ednh cu\u0309a kh\u1ed1i c\u1ea7u<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u03c0 \u0111\u01b0\u01a1\u0323c \u0111i\u0323nh nghi\u0303a l\u00e0 h\u1eb1ng s\u1ed1 Pi v\u01a1\u0301i gi\u00e1 tr\u1ecb x\u1ea5p x\u1ec9 l\u00e0 3.14<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady, n\u1ebfu b\u00e1n k\u00ednh c\u1ee7a kh\u1ed1i c\u1ea7u t\u0103ng g\u1ea5p \u0111\u00f4i th\u00ec th\u1ec3 t\u00edch kh\u1ed1i c\u1ea7u s\u1ebd t\u0103ng g\u1ea5p t\u00e1m l\u1ea7n. V\u00ed d\u1ee5, n\u1ebfu b\u00e1n k\u00ednh c\u1ee7a kh\u1ed1i c\u1ea7u l\u00e0 1 cm th\u00ec th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i c\u1ea7u \u0111\u00f3 l\u00e0 4\/3\u03c0 cm\u00b3. N\u1ebfu b\u00e1n k\u00ednh c\u1ee7a kh\u1ed1i c\u1ea7u t\u0103ng l\u00ean 2 cm th\u00ec th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i c\u1ea7u s\u1ebd t\u0103ng l\u00ean th\u00e0nh 64\/3\u03c0 cm\u00b3.<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-12-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-12-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-12-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-306314 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-12-1.jpg\" alt=\"the-tich-hinh-cau-12\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-12-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-12-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-12-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 gi\u1ea3i th\u00edch m\u1ed1i quan h\u1ec7 n\u00e0y nh\u01b0 sau: Kh\u1ed1i c\u1ea7u l\u00e0 m\u1ed9t h\u00ecnh th\u1ec3 ba chi\u1ec1u, c\u00f3 b\u00e1n k\u00ednh l\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3. B\u00e1n k\u00ednh c\u00e0ng l\u1edbn th\u00ec kh\u1ed1i c\u1ea7u c\u00e0ng l\u1edbn, th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i c\u1ea7u c\u0169ng c\u00e0ng l\u1edbn. Do \u0111\u00f3, th\u1ec3 t\u00edch c\u1ee7a hi\u0300nh c\u1ea7u t\u1ec9 l\u1ec7 v\u1edbi kh\u1ed1i c\u1ee7a b\u00e1n k\u00ednh l\u1eadp ph\u01b0\u01a1ng.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">\u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">C\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh th\u1ec3 t\u00edch c\u1ee7a h\u00ecnh c\u1ea7u c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">V\u00ea\u0300 li\u0303nh v\u01b0\u0323c to\u00e1n h\u1ecdc: C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n v\u1ec1 h\u00ecnh h\u1ecdc kh\u00f4ng gian, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00ednh th\u1ec3 t\u00edch c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 c\u00f3 h\u00ecnh c\u1ea7u, nh\u01b0 qu\u1ea3 b\u00f3ng, tr\u00e1i \u0111\u1ea5t,&#8230;<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ki\u1ebfn tr\u00fac: C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng c\u00e1c c\u00f4ng tr\u00ecnh c\u00f3 h\u00ecnh c\u1ea7u, vi\u0301 du\u0323 nh\u01b0 h\u1ed3 n\u01b0\u1edbc, b\u1ec3 ch\u1ee9a, v\u00f2i phun n\u01b0\u1edbc,&#8230;<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">C\u00f4ng ngh\u1ec7 x\u00e2y d\u1ef1ng: C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n l\u01b0\u1ee3ng v\u1eadt li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c c\u00f4ng tr\u00ecnh c\u00f3 h\u00ecnh c\u1ea7u nh\u01b0 c\u1ea7u, \u0111\u01b0\u1eddng h\u1ea7m,&#8230;<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">V\u1eadt l\u00fd: C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 c\u00f3 h\u00ecnh c\u1ea7u nh\u01b0 ch\u00e2\u0301t khi\u0301, ch\u00e2\u0301t lo\u0309ng,&#8230;\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">C\u01a1 h\u1ecdc: Th\u00ea\u0309 ti\u0301ch c\u1ee7a hi\u0300nh c\u00e2\u0300u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean c\u00e1c v\u1eadt th\u1ec3 hi\u0300nh c\u00e2\u0300u co\u0301 ca\u0301c ta\u0301c \u0111\u00f4\u0323ng c\u01a1 ho\u0323c nh\u01b0 qua\u0309 bo\u0301ng na\u0309y l\u00ean kho\u0309i m\u0103\u0323t \u0111\u00e2\u0301t,..<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-13.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-13-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/01\/the-tich-hinh-cau-13-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-306307 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-13.jpg\" alt=\"the-tich-hinh-cau-13\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-13.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-13-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/01\/the-tich-hinh-cau-13-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2>T\u00f4\u0309ng k\u00ea\u0301t<\/h2>\n<p>Th\u00f4ng qua b\u00e0i vi\u1ebft tr\u00ean b\u1ea1n \u0111\u00e3 bi\u1ebft \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh di\u1ec7n t\u00edch m\u1eb7t c\u1ea7u v\u00e0 th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp nh\u01b0 th\u1ebf n\u00e0o. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1ch x\u00e1c \u0111\u1ecbnh th\u1ec3 t\u00edch cuark h\u1ed1i c\u1ea7u t\u1eebng b\u01b0\u1edbc chi ti\u1ebft v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a n\u00f3 v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c c\u00f3 trong h\u00ecnh c\u1ea7u. Hy v\u1ecdng Ho\u00e0ng H\u00e0 Mobile \u0111\u00e3 cung c\u1ea5p nh\u1eefng ki\u1ebfn th\u1ee9c quan tr\u1ecdng v\u00e0 b\u1ed5 \u00edch v\u1ec1 to\u00e1n h\u1ecdc \u0111\u1ec3 b\u1ea1n \u0111\u1ecdc c\u00f3 th\u1ec3 hi\u1ec3u r\u00f5 v\u00e0 theo d\u00f5i.<\/p>\n<p>Xem th\u00eam:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/khoi-d07\/\">Kh\u1ed1i D07 g\u1ed3m m\u00f4n thi n\u00e0o, ng\u00e0nh thi n\u00e0o?<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/the-tich-khoi-cau\/\">C\u00f4ng th\u1ee9c t\u00ednh th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u v\u00e0 di\u1ec7n t\u00edch h\u00ecnh c\u1ea7u<\/a><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>M\u0103\u0323t c\u00e2\u0300u, kh\u00f4\u0301i c\u00e2\u0300u la\u0300 nh\u01b0\u0303ng kha\u0301i ni\u00ea\u0323m c\u01b0\u0323c ky\u0300 quen thu\u00f4\u0323c trong hi\u0300nh ho\u0323c trung ho\u0323c. Tuy nhi\u00ean, kh\u00f4ng pha\u0309i ai cu\u0303ng nh\u01a1\u0301 chi\u0301nh xa\u0301c \u0111\u01b0\u01a1\u0323c c\u00f4ng th\u01b0\u0323c ti\u0301nh di\u00ea\u0323n ti\u0301ch m\u0103\u0323t c\u00e2\u0300u, th\u00ea\u0309 thi\u0301ch kh\u00f4\u0301i c\u00e2\u0300u. Th\u00f4ng qua ba\u0300i vi\u00ea\u0301t \u0111\u00e2y, Hoa\u0300ng Ha\u0300 Mobile se\u0303 cung c\u00e2\u0301p c\u00f4ng th\u01b0\u0301c th\u00ea\u0309 ti\u0301ch hi\u0300nh c\u00e2\u0300u [&hellip;]<\/p>\n","protected":false},"author":91,"featured_media":305891,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3910,30453],"tags":[],"class_list":["post-305862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch m\u1eb7t c\u1ea7u, th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u<\/title>\n<meta name=\"description\" content=\"Th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u \u0111\u01b0\u01a1\u0323c xa\u0301c \u0111i\u0323nh b\u0103\u0300ng b\u00f4\u0301n ph\u00e2\u0300n ba cu\u0309a s\u00f4\u0301 Pi nh\u00e2n v\u01a1\u0301i ba\u0301n ki\u0301nh l\u00e2\u0323p ph\u01b0\u01a1ng cu\u0309a hi\u0300nh c\u00e2\u0300u.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/the-tich-hinh-cau\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch m\u1eb7t c\u1ea7u, th\u1ec3 t\u00edch kh\u1ed1i c\u1ea7u\" \/>\n<meta property=\"og:description\" content=\"Th\u1ec3 t\u00edch h\u00ecnh c\u1ea7u \u0111\u01b0\u01a1\u0323c xa\u0301c \u0111i\u0323nh b\u0103\u0300ng b\u00f4\u0301n ph\u00e2\u0300n ba cu\u0309a s\u00f4\u0301 Pi nh\u00e2n v\u01a1\u0301i ba\u0301n ki\u0301nh l\u00e2\u0323p ph\u01b0\u01a1ng cu\u0309a hi\u0300nh c\u00e2\u0300u.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hoanghamobile.com\/tin-tuc\/the-tich-hinh-cau\/\" \/>\n<meta property=\"og:site_name\" content=\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - 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