Hình lăng trụ đứng tam giác và hình lăng trụ đứng tứ giác

Home Toán lớp 7 - tập 2 Chương 10: Một số hình khối trong thực tiễn Bài 37: Hình lăng trụ đứng tam giác và hình lăng trụ đứng tứ giácBài tập trung bình

{"common":{"save":0,"post_id":"5852","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8019","post_id":"5852","mon_id":"1158532","chapter_id":"1158663","question":"Hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng ABC.A'B'C' có các c\u1ea1nh bên là <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p> <svg height=\"200\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"202\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_6\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_8\"> <path d=\"m40.35994,102.85475l0,-59l114.00001,59l-114.00001,0z\" fill=\"#fff\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 97.35994720458986,73.35475158691406) \"><\/path> <path d=\"m39.35994,208.85475l0,-58.99999l114.00001,58.99999l-114.00001,0z\" fill=\"#fff\" id=\"svg_2\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 96.35994720458983,179.35476684570312) \"><\/path> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"34\" x2=\"33.5125\" y1=\"72.05\" y2=\"180\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"162\" x2=\"161.5125\" y1=\"72.05\" y2=\"180\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"134\" x2=\"133.5125\" y1=\"22.05\" y2=\"130\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"rotate(90 97.75624847412108,179.5249938964844) \" x1=\"98\" x2=\"97.5125\" y1=\"116.05\" y2=\"243\"><\/line> <\/g> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"14.5125\" xml:space=\"preserve\" y=\"77.05\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"112.5125\" xml:space=\"preserve\" y=\"22.05\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"167.5125\" xml:space=\"preserve\" y=\"80.05\">C<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"6.5125\" xml:space=\"preserve\" y=\"194.05\">A'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"102.5125\" xml:space=\"preserve\" y=\"126.05\">B'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"164.5125\" xml:space=\"preserve\" y=\"190.05\">C'<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> AB, A'B' và BC","B.<\/strong> CC', AA' và BA","C.<\/strong> BB', AA' và CC'","D.<\/strong> AB, BB' và CC'"],"correct":"3","level":"2","hint":"","answer":"Hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng ABC.A'B'C' có các c\u1ea1nh bên là  C.<\/strong> BB', AA' và CC'<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-15 09:56:41","option_type":"txt","len":2},{"id":"8020","post_id":"5852","mon_id":"1158532","chapter_id":"1158663","question":"Các m\u1eb7t bên c\u1ee7a hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng tam giác DEF.DEF' là <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p><svg height=\"200\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"202\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_6\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><path d=\"m40.35994,102.85475l0,-59l114.00001,59l-114.00001,0z\" fill=\"#ffffff\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 97.35994720458986,73.35475158691406) \"><\/path> <path d=\"m39.35994,208.85475l0,-58.99999l114.00001,58.99999l-114.00001,0z\" fill=\"#ffffff\" id=\"svg_2\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 96.35994720458983,179.35476684570312) \"><\/path> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"34\" x2=\"33.5125\" y1=\"72.05\" y2=\"180\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"162\" x2=\"161.5125\" y1=\"72.05\" y2=\"180\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"134\" x2=\"133.5125\" y1=\"22.05\" y2=\"130\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"rotate(90 97.75624847412108,179.5249938964844) \" x1=\"98\" x2=\"97.5125\" y1=\"116.05\" y2=\"243\"><\/line> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"15.5125\" xml:space=\"preserve\" y=\"69.05\">D<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"114.5125\" xml:space=\"preserve\" y=\"19.05\">E<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_10\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"173.5125\" xml:space=\"preserve\" y=\"86.05\">F<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.5125\" xml:space=\"preserve\" y=\"188.05\">D'<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_12\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"108.5125\" xml:space=\"preserve\" y=\"127.05\">E'<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"165.5125\" xml:space=\"preserve\" y=\"186.05\">F'<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> Các hình ch\u1eef nh\u1eadt DEE'D', EFF'E' và DFF'D'","B.<\/strong> Các hình tam giác DEF và D'E'F'","C.<\/strong> Các hình ch\u1eef nh\u1eadt DEE'D', EFF'E'","D.<\/strong> Các hình ch\u1eef nh\u1eadt EFF'E' và DFF'D'"],"correct":"1","level":"2","hint":"","answer":"Các m\u1eb7t bên c\u1ee7a hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng tam giác DEF.DEF' là A.<\/strong> Các hình ch\u1eef nh\u1eadt DEE'D', EFF'E' và DFF'D'<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-15 10:00:01","option_type":"txt","len":3},{"id":"8022","post_id":"5852","mon_id":"1158532","chapter_id":"1158663","question":"Hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng ABC.A'B'C' có AB = 3 dm, AC = 4 dm, BB' = 12 dm. Tính th\u1ec3 tích c\u1ee7a hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng ABC.A'B'C'<\/p><svg height=\"200\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"202\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_6\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_8\" transform=\"rotate(-152.03839111328125 103.08937072753906,102.3547592163086) \"> <path d=\"m46.35994,78.85475l0,-59l114.00001,59l-114.00001,0z\" fill=\"#ffffff\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 103.35994720458984,49.35475158691406) \"><\/path> <path d=\"m45.35994,184.85475l0,-58.99999l114.00001,58.99999l-114.00001,0z\" fill=\"#ffffff\" id=\"svg_2\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-width=\"1.5\" transform=\"rotate(152.76795959472656 102.35994720458984,155.35476684570312) \"><\/path> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"40\" x2=\"39.5125\" y1=\"48.05\" y2=\"156\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"168\" x2=\"167.5125\" y1=\"48.05\" y2=\"156\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"140\" x2=\"139.5125\" y1=\"-1.95\" y2=\"106\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"rotate(90 103.75624847412108,155.5249938964844) \" x1=\"104\" x2=\"103.5125\" y1=\"92.05\" y2=\"219\"><\/line> <\/g> <rect fill=\"none\" height=\"14\" id=\"svg_9\" stroke=\"#000000\" stroke-width=\"1.5\" width=\"12\" x=\"20.5125\" y=\"164.05\"><\/rect> <rect fill=\"#fff\" height=\"13\" id=\"svg_10\" stroke=\"#000\" stroke-width=\"1.5\" width=\"12\" x=\"71.5125\" y=\"72.05\"><\/rect> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"3.5125\" xml:space=\"preserve\" y=\"193.05\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_12\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"1.5125\" xml:space=\"preserve\" y=\"123.05\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"138.5125\" xml:space=\"preserve\" y=\"197.05\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"67.5125\" xml:space=\"preserve\" y=\"112.05\">A'<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_15\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"45.5125\" xml:space=\"preserve\" y=\"32.05\">B'<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_16\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"178.5125\" xml:space=\"preserve\" y=\"77.05\">C'<\/text> <\/g> <\/svg><\/span><\/p>","options":["A. <\/strong>73 dm³","B. <\/strong>144 dm³","C. <\/strong>72 m³","D. <\/strong>72 dm³"],"correct":"4","level":"2","hint":"Th\u1ec3 tích c\u1ee7a hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng là $V=S_{\u0111\u00e1y}.h$<\/span><\/span>  (v\u1edbi  $S_{\u0111\u00e1y}$<\/span> là di\u1ec7n tích m\u1eb7t \u0111áy, $h$<\/span> là chi\u1ec1u cao)<\/p>Hình l\u0103ng tr\u1ee5 \u0111\u1ee9ng ABC.A'B'C' có \u0111áy là tam giác vuông ABC v\u1edbi AB = 3 dm, AC = 4 dm và có chi\u1ec1u cao là BB' = 12 dm.<\/p>","answer":"Th\u1ec3 tích c\u1ee7a l\u0103ng tr\u1ee5 ABC.A'B'C' là:<\/p>$V=S_{ABC}.BB’$<\/span><\/p>    $=\\dfrac{1}{2}.AB.AC.BB’$<\/span><\/p>    $=\\dfrac{1}{2}.3.4.12=72$<\/span> (dm³)<\/p>\u0110áp án \u0111úng là D. <\/strong>72 dm³<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-15 10:03:06","option_type":"txt","len":1}]}