Diện tích xung quanh và diện tích toàn phần của hình hộp chữ nhật

Home Lớp 5 Toán lớp 5 - Sách Kết nối tri thức Bài 50: Diện tích xung quanh và diện tích toàn phần của hình hộp chữ nhậtBài tập trung bình

{"common":{"save":0,"post_id":"8406","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4559","post_id":"8406","mon_id":"1159414","chapter_id":"1159497","question":"M\u1ed9t b\u1ec3 b\u01a1i d\u1ea1ng hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 15 m, chi\u1ec1u r\u1ed9ng 5 m và chi\u1ec1u cao 2 m. Ng\u01b0\u1eddi ta mu\u1ed1n \u1ed1p g\u1ea1ch men xung quanh thành b\u1ec3 b\u01a1i. Tính di\u1ec7n tích \u0111\u01b0\u1ee3c \u1ed1p g\u1ea1ch men (di\u1ec7n tích m\u1ea1ch v\u1eefa không \u0111áng k\u1ec3).<\/p>","options":["A.<\/strong> 40 m²","B.<\/strong> 20 m²","C.<\/strong> 60 m²","D.<\/strong> 80 m²"],"correct":"4","level":"2","hint":"","answer":"Ch\u1ecdn D.<\/strong> 80 m².<\/span><\/p>Di\u1ec7n tích \u0111\u01b0\u1ee3c \u1ed1p g\u1ea1ch là (15 + 5) x 2 x 2 = 80 (m²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 09:04:01","option_type":"txt","len":1},{"id":"4561","post_id":"8406","mon_id":"1159414","chapter_id":"1159497","question":"M\u1ed9t b\u1ec3 b\u01a1i d\u1ea1ng hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 25 m, chi\u1ec1u r\u1ed9ng 10 m và chi\u1ec1u cao 4 m. Ng\u01b0\u1eddi ta mu\u1ed1n \u1ed1p g\u1ea1ch men xung quanh thành b\u1ec3 b\u01a1i. Tính di\u1ec7n tích \u0111\u01b0\u1ee3c \u1ed1p g\u1ea1ch men (di\u1ec7n tích m\u1ea1ch v\u1eefa không \u0111áng k\u1ec3).<\/p>","options":["A.<\/strong> 280 m²","B.<\/strong> 140 m²","C.<\/strong> 35 m²","D.<\/strong> 70 m²"],"correct":"1","level":"2","hint":"","answer":"Ch\u1ecdn A.<\/strong> 280 m².<\/span><\/p>Di\u1ec7n tích \u0111\u01b0\u1ee3c \u1ed1p g\u1ea1ch là (25 + 10) x 2 x 4 = 280 (m²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 09:06:56","option_type":"txt","len":1},{"id":"4564","post_id":"8406","mon_id":"1159414","chapter_id":"1159497","question":"Tính di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt d\u01b0\u1edbi \u0111ây.<\/p><svg height=\"160\" width=\"180\"> <g><title><\/title><rect fill=\"none\" height=\"162\" id=\"canvas_background\" width=\"182\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_23\"> <g id=\"svg_9\"> <line fill=\"none\" id=\"svg_1\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"32\" x2=\"133\" y1=\"26.25\" y2=\"26\"><\/line> <line fill=\"none\" id=\"svg_2\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"5\" x2=\"106\" y1=\"59.25\" y2=\"59\"><\/line> <line fill=\"none\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"33\" x2=\"4\" y1=\"26.25\" y2=\"59.25\"><\/line> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"134\" x2=\"105\" y1=\"26.25\" y2=\"59.25\"><\/line> <line fill=\"none\" id=\"svg_5\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"32\" x2=\"133\" y1=\"26.25\" y2=\"26\"><\/line> <line fill=\"none\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"5\" x2=\"106\" y1=\"59.25\" y2=\"59\"><\/line> <line fill=\"none\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"33\" x2=\"4\" y1=\"26.25\" y2=\"59.25\"><\/line> <line fill=\"none\" id=\"svg_8\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"134\" x2=\"105\" y1=\"26.25\" y2=\"59.25\"><\/line> <\/g> <line fill=\"none\" id=\"svg_10\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"32\" x2=\"133\" y1=\"119.25\" y2=\"119\"><\/line> <line fill=\"none\" id=\"svg_11\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"5\" x2=\"106\" y1=\"152.25\" y2=\"152\"><\/line> <line fill=\"none\" id=\"svg_12\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"33\" x2=\"4\" y1=\"119.25\" y2=\"152.25\"><\/line> <line fill=\"none\" id=\"svg_13\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"134\" x2=\"105\" y1=\"119.25\" y2=\"152.25\"><\/line> <line fill=\"none\" id=\"svg_14\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"32\" x2=\"133\" y1=\"119.25\" y2=\"119\"><\/line> <line fill=\"none\" id=\"svg_15\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"5\" x2=\"106\" y1=\"152.25\" y2=\"152\"><\/line> <line fill=\"none\" id=\"svg_16\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"33\" x2=\"4\" y1=\"119.25\" y2=\"152.25\"><\/line> <line fill=\"none\" id=\"svg_17\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"134\" x2=\"105\" y1=\"119.25\" y2=\"152.25\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_19\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"34\" x2=\"34\" y1=\"27\" y2=\"120.25\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_20\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"133\" x2=\"133\" y1=\"27\" y2=\"120.25\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_21\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"5\" x2=\"5\" y1=\"59\" y2=\"152.25\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_22\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"104\" x2=\"104\" y1=\"59\" y2=\"152.25\"><\/line> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_24\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"64\" xml:space=\"preserve\" y=\"19.25\">3 cm<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_25\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"123\" xml:space=\"preserve\" y=\"145.25\">2,5 cm<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_26\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"141\" xml:space=\"preserve\" y=\"75.25\">4 cm<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> 22 cm²","B.<\/strong> 11 cm²","C.<\/strong> 44 cm²","D.<\/strong> 33 cm²"],"correct":"3","level":"2","hint":"","answer":"Ch\u1ecdn C.<\/strong> 44 cm².<\/span><\/p>Hình h\u1ed9p ch\u1eef nh\u1eadt trong hình có chi\u1ec1u dài là 3 cm, chi\u1ec1u r\u1ed9ng là 2,5 cm và chi\u1ec1u cao là 4 cm.<\/p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt là (3 + 2,5) x 2 x 4 = 44 (cm²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 09:17:07","option_type":"txt","len":1}]}