Diện tích hình chữ nhật, diện tích hình vuông

Home Lớp 3 Toán lớp 3 - Sách Kết nối tri thức Bài 52: Diện tích hình chữ nhật, diện tích hình vuôngBài tập nâng cao

{"common":{"save":0,"post_id":"5903","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1267","post_id":"5903","mon_id":"1158530","chapter_id":"1158694","question":"M\u1ed9t mi\u1ebfng bìa hình ch\u1eef nh\u1eadt có chi\u1ec1u dài là 12 cm, chi\u1ec1u r\u1ed9ng là 8 cm. Tính di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/con-bo3.png\" \/><\/div>","options":["A. <\/strong>40 cm²","B. <\/strong>69 cm²","C. <\/strong>48 cm²","D. <\/strong>96 cm²"],"correct":"4","level":"3","hint":"Di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa b\u1eb1ng di\u1ec7n tích c\u1ee7a hình ch\u1eef nh\u1eadt có chi\u1ec1u dài 12 cm và chi\u1ec1u r\u1ed9ng 8 cm.<\/p>","answer":"Di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa là:<\/p>12 x 8 = 96 (cm²)<\/p>     \u0110áp s\u1ed1: 96 cm²<\/p>V\u1eady di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa là  D. <\/strong>96 cm²<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-13 02:48:37","option_type":"txt","len":1},{"id":"1269","post_id":"5903","mon_id":"1158530","chapter_id":"1158694","question":"M\u1ed9t hình ch\u1eef nh\u1eadt có di\u1ec7n tích là 72 cm² và chi\u1ec1u dài là 9 cm. Tính chi\u1ec1u r\u1ed9ng c\u1ee7a hình ch\u1eef nh\u1eadt \u0111ó.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/vit.png\" \/><\/div>","options":["A. <\/strong>8 cm","B. <\/strong>9 cm","C. <\/strong>4 cm","D. <\/strong>10 cm"],"correct":"1","level":"3","hint":"Chi\u1ec1u r\u1ed9ng = Di\u1ec7n tích : chi\u1ec1u dài<\/p>","answer":"Chi\u1ec1u r\u1ed9ng c\u1ee7a hình ch\u1eef nh\u1eadt là:<\/p>72 : 9 = 8 (cm)<\/p>   \u0110áp s\u1ed1: 8 cm<\/p>V\u1eady chi\u1ec1u r\u1ed9ng c\u1ee7a hình ch\u1eef nh\u1eadt là A. <\/strong>8 cm<\/span><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"131","test":"1","date":"2022-06-13 02:54:12","option_type":"txt","len":0},{"id":"1273","post_id":"5903","mon_id":"1158530","chapter_id":"1158694","question":"Hình 1 g\u1ed3m hình ch\u1eef nh\u1eadt ABCD và hình vuông DEMN nh\u01b0 hình d\u01b0\u1edbi. Tính di\u1ec7n tích c\u1ee7a hình 1.<\/p><svg height=\"250\" width=\"300\"> <g><title><\/title><rect fill=\"#fff\" height=\"252\" id=\"canvas_background\" width=\"302\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_14\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_10\"> <rect fill=\"#ffaa56\" height=\"90\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"221\" x=\"23.0125\" y=\"24.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"110\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"110\" x=\"23.0125\" y=\"114.2375\"><\/rect> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"3.0125\" xml:space=\"preserve\" y=\"22.2375\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"244.0125\" xml:space=\"preserve\" y=\"23.2375\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"248.0125\" xml:space=\"preserve\" y=\"121.2375\">C<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"2.0125\" xml:space=\"preserve\" y=\"117.2375\">D<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"123.0125\" xml:space=\"preserve\" y=\"103.2375\">E<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"139.0125\" xml:space=\"preserve\" y=\"237.2375\">M<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"0.0125\" xml:space=\"preserve\" y=\"232.2375\">N<\/text> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"249.0125\" xml:space=\"preserve\" y=\"72.2375\">7 cm<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"142.0125\" xml:space=\"preserve\" y=\"179.2375\">8 cm<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_13\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"102.0125\" xml:space=\"preserve\" y=\"19.2375\">16 cm<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_15\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"200.0125\" xml:space=\"preserve\" y=\"227.2375\">Hình 1<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_16\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"248.0125\" xml:space=\"preserve\" y=\"432.2375\"><\/text> <\/g> <\/svg><\/span><\/p>","options":["A. <\/b>167 cm²","B. <\/b>176 cm²","C. <\/b>112 cm²","D. <\/b>64 cm²"],"correct":"2","level":"3","hint":"Di\u1ec7n tích c\u1ee7a hình 1 b\u1eb1ng t\u1ed5ng di\u1ec7n tích c\u1ee7a hình ch\u1eef nh\u1eadt ABCD và hình vuông DEMN.<\/p>","answer":"Di\u1ec7n tích c\u1ee7a hình ch\u1eef nh\u1eadt ABCD là:<\/p>16 x 7 = 112 (cm²)<\/p>Di\u1ec7n tích c\u1ee7a hình vuông DEMN là:<\/p>8 x 8 = 64 (cm²)<\/p>Di\u1ec7n tích c\u1ee7a hình 1 là: <\/p>112 + 64 = 176 (cm²)<\/p>\u0110áp án \u0111úng là  B. <\/b>176 cm²<\/span><\/p>","type":"choose","extra_type":"sheep","time":"0","user_id":"131","test":"1","date":"2022-06-13 03:06:05","option_type":"txt","len":0}]}