{"id":14367,"date":"2025-06-08T04:11:50","date_gmt":"2025-06-07T21:11:50","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=14367"},"modified":"2025-07-04T17:55:12","modified_gmt":"2025-07-04T10:55:12","slug":"chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/","title":{"rendered":"Chi ti\u1ebft c\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Xem_lai_kien_%E2%80%8B%E2%80%8Bthuc_ve_lop_4\" >Xem l\u1ea1i ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 l\u1edbp 4<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Dinh_nghia_cua_hinh_binh_hanh\" >\u0110\u1ecbnh ngh\u0129a c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Tinh_chat_cua_hinh_binh_hanh\" >T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Cong_thuc_tinh_toan_dien_tich_hinh_binh_hanh_cua_lop_4\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Cac_loai_bai_tap_tren_khu_vuc_cua_hinh_binh_hanh_toan_hoc_lop_4\" >C\u00e1c lo\u1ea1i b\u00e0i t\u1eadp tr\u00ean khu v\u1ef1c c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh to\u00e1n h\u1ecdc l\u1edbp 4<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Mau_1_Tinh_dien_tich_hinh_binh_hanh_khi_biet_chieu_dai_va_chieu_cao_duoi_cung\" >M\u1eabu 1: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh khi bi\u1ebft chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u cao d\u01b0\u1edbi c\u00f9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Mau_2_Tinh_do_dai_duoi_cung_khi_biet_dien_tich_va_chieu_cao\" >M\u1eabu 2: T\u00ednh \u0111\u1ed9 d\u00e0i d\u01b0\u1edbi c\u00f9ng khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u cao<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Mau_3_Tinh_chieu_cao_khi_biet_dien_tich_va_chieu_dai_cua_day\" >M\u1eabu 3: T\u00ednh chi\u1ec1u cao khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u00e1y<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Giai_quyet_cac_bai_tap_de_tinh_dien_tich_hinh_binh_hanh_cua_lop_4_Trang_104_SGK\" >Gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp \u0111\u1ec3 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4 Trang 104 SGK<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Bai_1_Trang_104_Toan_hoc_lop_4_SGK\" >B\u00e0i 1, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Bai_2_Trang_104_Toan_hoc_lop_4_SGK\" >B\u00e0i 2, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Bai_3_Trang_104_Toan_hoc_lop_4_SGK\" >B\u00e0i 3, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/chi-tiet-cach-tinh-dien-tich-hinh-binh-hanh-lop-4-va-bai-tap-co-loi-giai\/#Mot_so_bai_tap_de_tinh_dien_tich_hinh_binh_hanh_lop_4_co_cau_tra_loi\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 (c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi)<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc chung hi\u1ec7n t\u1ea1i, c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean trong c\u00e1c b\u00e0i t\u1eadp \u1edf l\u1edbp 4. \u0110\u1ebfn b\u00e0i vi\u1ebft n\u00e0y, kh\u1ec9 s\u1ebd chia s\u1ebb v\u1edbi b\u1ea1n t\u1ea5t c\u1ea3 ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u1ec3 bi\u1ebft v\u1ec1 c\u00e1ch t\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 v\u00e0 c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp ph\u1ed5 bi\u1ebfn. Vui l\u00f2ng tham kh\u1ea3o ngay!<\/p>\n<p>                        Xem t\u1ea5t c\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xem_lai_kien_%E2%80%8B%E2%80%8Bthuc_ve_lop_4\"><\/span>Xem l\u1ea1i ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 l\u1edbp 4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u01b0\u1edbc khi li\u00ean h\u1ec7 v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n di\u1ec7n t\u00edch c\u1ee7a l\u1edbp th\u1ee9 4, b\u1ea1n c\u1ea7n xem x\u00e9t ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh b\u00ecnh h\u00e0nh, ch\u1eb3ng h\u1ea1n nh\u01b0: \u0111\u1ecbnh ngh\u0129a v\u00e0 t\u1ef1 nhi\u00ean, ngay b\u00ean d\u01b0\u1edbi.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_nghia_cua_hinh_binh_hanh\"><\/span>\u0110\u1ecbnh ngh\u0129a c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 m\u1ed9t h\u00ecnh t\u1ee9 gi\u00e1c v\u1edbi hai c\u1eb7p c\u1ea1nh song song v\u00e0 b\u1eb1ng nhau, nh\u01b0 \u0111\u01b0\u1ee3c minh h\u1ecda.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/1-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"H\u00ecnh b\u00ecnh h\u00e0nh. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chat_cua_hinh_binh_hanh\"><\/span>T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh c\u01a1 b\u1ea3n s\u1ebd c\u00f3 3 thu\u1ed9c t\u00ednh sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u1eb7p \u0111\u1ed1i di\u1ec7n l\u00e0 c\u1eb7p ph\u00e2n \u0111o\u1ea1n song song v\u00e0 b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u01b0\u01a1ng t\u1ef1, c\u00e1c g\u00f3c \u0111\u1ed1i di\u1ec7n s\u1ebd b\u1eb1ng nhau trong m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Trong m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh, hai \u0111\u01b0\u1eddng ch\u00e9o giao nhau \u1edf \u0111i\u1ec3m gi\u1eefa c\u1ee7a m\u1ed7i d\u00f2ng.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dien_tich_hinh_binh_hanh_cua_lop_4\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">H\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a to\u00e1n h\u1ecdc l\u1edbp 4 l\u00e0 g\u00ec? Khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 khu v\u1ef1c m\u1eb7t ph\u1eb3ng b\u00ean trong b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi c\u00e1c c\u1ea1nh c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh. V\u00f9ng h\u00ecnh b\u00ecnh h\u00e0nh b\u1eb1ng \u0111\u1ed9 d\u00e0y d\u01b0\u1edbi c\u00f9ng c\u1ee7a \u0111\u1ebf v\u1edbi chi\u1ec1u cao, v\u1edbi c\u00f4ng th\u1ee9c:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = ah<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S: Khu v\u1ef1c h\u00ecnh \u1ea3nh song song<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A: C\u1ea1nh d\u01b0\u1edbi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh (l\u00e0 b\u1ea5t k\u1ef3 c\u1ea1nh \u0111\u01b0\u1ee3c ch\u1ecdn)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H: Chi\u1ec1u cao c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh (l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a m\u1ed9t ph\u00e2n \u0111o\u1ea1n k\u1ebft n\u1ed1i t\u1eeb \u0111\u1ec9nh xu\u1ed1ng d\u01b0\u1edbi)<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <\/p>\n<p dir=\"ltr\">N\u1ebfu chi\u1ec1u d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 10 cm v\u00e0 chi\u1ec1u cao t\u01b0\u01a1ng \u1ee9ng l\u00e0 3 cm, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = 10 cm x 3 cm = 30 cm2<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0 30 cm2.<\/p>\n<table style=\"border-collapse: collapse;width: 100.01%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5932%\">\n<p style=\"text-align: center\">\u0110\u1eebng b\u1ecf l\u1ee1 !!<\/p>\n<p style=\"text-align: center\">Ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eb1ng ti\u1ebfng Anh, gi\u00fap ph\u00e1t tri\u1ec3n t\u01b0 duy theo c\u00e1ch to\u00e0n di\u1ec7n nh\u1ea5t.<\/p>\n<p style=\"text-align: center\">Nh\u1eadn t\u1ed1i \u0111a 40% \u01b0u \u0111\u00e3i ngay t\u1ea1i \u0111\u00e2y!<img decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/taimienphiMM.png\" width=\"185\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00ean c\u1ea1nh khu v\u1ef1c, sinh vi\u00ean c\u0169ng c\u1ea7n nh\u1edb c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh, nh\u01b0 sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">C = (a + b) x 2<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C: chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A, B: Hai m\u1eb7t (kh\u00f4ng \u0111\u1ed1i di\u1ec7n) c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <\/p>\n<p dir=\"ltr\">N\u1ebfu ch\u00fang ta c\u00f3 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh v\u1edbi hai ph\u00e9p \u0111o, 10 cm v\u00e0 3 cm, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ednh chu vi nh\u01b0 sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">C = (10 + 3) x 2 = 26 cm<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, chu vi c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u00f3 l\u00e0 26 cm.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_loai_bai_tap_tren_khu_vuc_cua_hinh_binh_hanh_toan_hoc_lop_4\"><\/span>C\u00e1c lo\u1ea1i b\u00e0i t\u1eadp tr\u00ean khu v\u1ef1c c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh to\u00e1n h\u1ecdc l\u1edbp 4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc, c\u00f3 t\u1ed5ng c\u1ed9ng 3 lo\u1ea1i b\u00e0i t\u1eadp v\u1ec1 khu v\u1ef1c to\u00e1n h\u1ecdc ph\u1ed5 bi\u1ebfn c\u1ee7a l\u1edbp 4.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Tinh_dien_tich_hinh_binh_hanh_khi_biet_chieu_dai_va_chieu_cao_duoi_cung\"><\/span>M\u1eabu 1: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh khi bi\u1ebft chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u cao d\u01b0\u1edbi c\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 h\u00ecnh th\u1ee9c t\u1eadp th\u1ec3 d\u1ee5c c\u01a1 b\u1ea3n nh\u1ea5t, b\u1ea1n ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4: s = ah l\u00e0 k\u1ebft qu\u1ea3.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, c\u00f3 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh v\u1edbi chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng l\u00e0 6 cm v\u00e0 chi\u1ec1u cao 8 cm. T\u00ednh di\u1ec7n t\u00edch?<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = AH = 6 cm x 8 cm = 48 cm2<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u00f3 l\u00e0 48 cm2.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/2-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"T\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Tinh_do_dai_duoi_cung_khi_biet_dien_tich_va_chieu_cao\"><\/span>M\u1eabu 2: T\u00ednh \u0111\u1ed9 d\u00e0i d\u01b0\u1edbi c\u00f9ng khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u cao<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ednh \u0111\u1ed9 d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c sau: a = s\/h.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, c\u00f3 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh v\u1edbi di\u1ec7n t\u00edch 60 cm2 v\u00e0 chi\u1ec1u cao 12 cm. T\u00ednh \u0111\u1ed9 d\u00e0i d\u01b0\u1edbi c\u00f9ng?<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">A = S \/ H = 60 cm2 \/ 12 cm = 5 cm<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh tr\u00ean l\u00e0 5 cm.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Tinh_chieu_cao_khi_biet_dien_tich_va_chieu_dai_cua_day\"><\/span>M\u1eabu 3: T\u00ednh chi\u1ec1u cao khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u00e1y<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ednh chi\u1ec1u cao c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c sau: h = s\/a.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: C\u00f3 m\u1ed9t h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a di\u1ec7n t\u00edch 75 cm2 v\u00e0 chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng l\u00e0 15 cm.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">h = s \/ a = 75 cm2 \/ 15 cm = 5 cm<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, chi\u1ec1u cao c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh tr\u00ean l\u00e0 5 cm.<\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Giai_quyet_cac_bai_tap_de_tinh_dien_tich_hinh_binh_hanh_cua_lop_4_Trang_104_SGK\"><\/span>Gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp \u0111\u1ec3 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4 Trang 104 SGK<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c chi ti\u1ebft chi ti\u1ebft v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a c\u00e1c h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_1_Trang_104_Toan_hoc_lop_4_SGK\"><\/span>B\u00e0i 1, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ch\u1ee7 \u0111\u1ec1: T\u00ednh di\u1ec7n t\u00edch c\u1ee7a m\u1ed7i h\u00ecnh b\u00ecnh h\u00e0nh b\u00ean d\u01b0\u1edbi<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/3-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\"><em>(\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4: s = ah, cho t\u1ea5t c\u1ea3 c\u00e1c h\u00ecnh \u1ea3nh.)<\/em><\/p>\n<ol>\n<li dir=\"ltr\">H\u00ecnh b\u00ecnh h\u00e0nh b\u00ean tr\u00e1i c\u00f3 di\u1ec7n t\u00edch: 9 \u00d7 5 = 45 (cm2)<\/li>\n<li dir=\"ltr\">H\u00ecnh b\u00ecnh h\u00e0nh \u1edf gi\u1eefa c\u00f3 di\u1ec7n t\u00edch: 13 \u00d7 4 = 52 (cm2)<\/li>\n<li dir=\"ltr\">H\u00ecnh b\u00ecnh h\u00e0nh b\u00ean ph\u1ea3i c\u00f3 di\u1ec7n t\u00edch: 7 x 9 = 63 (cm2)<\/li>\n<\/ol>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_2_Trang_104_Toan_hoc_lop_4_SGK\"><\/span>B\u00e0i 2, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ch\u1ee7 \u0111\u1ec1: T\u00ednh di\u1ec7n t\u00edch c\u1ee7a<\/p>\n<p dir=\"ltr\">M\u1ed9t. H\u00ecnh ch\u1eef nh\u1eadt<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/4-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"\" width=\"300\" height=\"161\"><\/p>\n<p dir=\"ltr\">b. H\u00ecnh b\u00ecnh h\u00e0nh<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/5-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"\" width=\"300\" height=\"167\"><\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\"><em>.<\/em><\/p>\n<p dir=\"ltr\">M\u1ed9t. V\u00f9ng h\u00ecnh ch\u1eef nh\u1eadt l\u00e0: 10 x 5 = 50 (cm2)<\/p>\n<p dir=\"ltr\">b. V\u00f9ng h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0: 10 x 5 = 50 cm2<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_3_Trang_104_Toan_hoc_lop_4_SGK\"><\/span>B\u00e0i 3, Trang 104, To\u00e1n h\u1ecdc l\u1edbp 4 (SGK)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ch\u1ee7 \u0111\u1ec1: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh, bi\u1ebft<\/p>\n<p dir=\"ltr\">M\u1ed9t. Chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng l\u00e0 4dm, chi\u1ec1u cao l\u00e0 34cm.<\/p>\n<p dir=\"ltr\">b. Chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng l\u00e0 4m, chi\u1ec1u cao l\u00e0 13dm.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\"><em>.<\/em><\/p>\n<p dir=\"ltr\">a) Thay \u0111\u1ed5i 4dm = 40 cm<\/p>\n<p dir=\"ltr\">Khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">40 x 34 = 1360 (cm2)<\/p>\n<p dir=\"ltr\">b) Thay \u0111\u1ed5i 4m = 40 dm<\/p>\n<p dir=\"ltr\">Khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh l\u00e0:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">40 x 13 = 520 (DM2)<\/p>\n<p dir=\"ltr\" style=\"text-align: left\">Xem th\u00eam:<\/p>\n<ol>\n<li dir=\"ltr\" style=\"text-align: left\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math &#8211; \u1ee8ng d\u1ee5ng to\u00e1n h\u1ecdc b\u1eb1ng ti\u1ebfng Anh s\u1ed1 1 cho tr\u1ebb m\u1eabu gi\u00e1o &amp; tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc<\/li>\n<li dir=\"ltr\" style=\"text-align: left\">L\u00fd thuy\u1ebft v\u00e0 b\u00e0i t\u1eadp c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 (t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao)<\/li>\n<\/ol>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_de_tinh_dien_tich_hinh_binh_hanh_lop_4_co_cau_tra_loi\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp 4 (c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 1: H\u00ecnh b\u00ecnh h\u00e0nh ABCD c\u00f3 chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng AB l\u00e0 5 cm v\u00e0 chi\u1ec1u cao 3 cm. T\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh n\u00e0y.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">S = AH = 5 cm x 3 cm = 15 cm2<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 2: H\u00ecnh b\u00ecnh h\u00e0nh MNPQ c\u00f3 di\u1ec7n t\u00edch 36 cm2 v\u00e0 chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a Mn l\u00e0 9 cm. T\u00ednh chi\u1ec1u cao c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh n\u00e0y.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">H = s \/ a = 36 cm2 \/ 9 cm = 4 cm<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 3: H\u00ecnh b\u00ecnh h\u00e0nh XYZT c\u00f3 di\u1ec7n t\u00edch 42 cm2 v\u00e0 chi\u1ec1u cao 6 cm. T\u00ednh chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh n\u00e0y.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">A = S \/ H = 42 cm2 \/ 6 cm = 7 cm<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 4: H\u00ecnh b\u00ecnh h\u00e0nh PQRW c\u00f3 di\u1ec7n t\u00edch 63 cm2 v\u00e0 chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a PQ l\u00e0 9 cm. T\u00ednh chi\u1ec1u cao c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh n\u00e0y.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">h = s \/ a = 63 cm2 \/ 9 cm = 7 cm<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 5: H\u00ecnh b\u00ecnh h\u00e0nh ABCD c\u00f3 chi\u1ec1u cao 8 cm v\u00e0 di\u1ec7n t\u00edch 32 cm2. T\u00ednh chi\u1ec1u d\u00e0i d\u01b0\u1edbi c\u00f9ng c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh n\u00e0y.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">A = S \/ H = 32 cm2 \/ 8 cm = 4 cm<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/6-tinh-dien-tich-hinh-binh-hanh-lop-4.png\" alt=\"T\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh b\u00ecnh h\u00e0nh c\u1ee7a l\u1edbp 4. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p>Hy v\u1ecdng, sau khi xem c\u00e1c h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean c\u1ee7a l\u1edbp th\u1ee9 4, n\u00f3 s\u1ebd gi\u00fap b\u1ea1n l\u00e0m ch\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 lo\u1ea1i h\u00ecnh h\u1ecdc t\u1eadp c\u01a1 b\u1ea3n n\u00e0y. H\u00e3y xem c\u00e1c b\u00e0i vi\u1ebft h\u1eefu \u00edch kh\u00e1c v\u1ec1 to\u00e1n h\u1ecdc c\u1ee7a kh\u1ec9 \u1edf \u0111\u00e2y.<\/p>\n<p>Ngu\u1ed3n: <a href=\"https:\/\/www.ckconitsha.com\/vn\/\">https:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc chung hi\u1ec7n t\u1ea1i, c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n khu v\u1ef1c h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean trong c\u00e1c b\u00e0i t\u1eadp \u1edf l\u1edbp 4. \u0110\u1ebfn b\u00e0i vi\u1ebft n\u00e0y, kh\u1ec9 s\u1ebd chia s\u1ebb v\u1edbi b\u1ea1n t\u1ea5t c\u1ea3 ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u1ec3 bi\u1ebft v\u1ec1 c\u00e1ch t\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh l\u1edbp&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-14367","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=14367"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14367\/revisions"}],"predecessor-version":[{"id":17352,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14367\/revisions\/17352"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=14367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=14367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=14367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}