Bài tập cuối chương 10-Một vài hình khối trong thực tiễn

Home Lớp 9 Toán lớp 9 - Sách Kết nối tri thức Bài tập cuối chương 10 - Một vài hình khối trong thực tiễnBài tập cơ bản

{"common":{"save":0,"post_id":"7996","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"11788","post_id":"7996","mon_id":"1159278","chapter_id":"1159334","question":"Khi quay m\u1ed9t tam giác vuông (k\u1ec3 c\u1ea3 các \u0111i\u1ec3m trong tam giác vuông \u0111ó) quanh \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ee9a m\u1ed9t c\u1ea1nh góc vuông ta \u0111\u01b0\u1ee3c:<\/p>","options":["A.<\/strong> Hình nón. ","B.<\/strong> Kh\u1ed1i tr\u1ee5.","C.<\/strong> Kh\u1ed1i nón.","D.<\/strong> Hình tr\u1ee5."],"correct":"3","level":"1","hint":"","answer":"Ch\u1ecdn C.<\/strong> Kh\u1ed1i nón.<\/span><\/p>Xoay 1 tam giác vuông (k\u1ec3 c\u1ea3 các \u0111i\u1ec3m trong tam giác vuông \u0111ó) quanh \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ee9a m\u1ed9t c\u1ea1nh góc vuông ta \u0111\u01b0\u1ee3c m\u1ed9t kh\u1ed1i nón.<\/p><svg height=\"180\" width=\"180\"> <g><title><\/title><rect fill=\"#d4ffaa\" height=\"182\" id=\"canvas_background\" width=\"182\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_2\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><ellipse cx=\"89.5\" cy=\"157.78725\" fill=\"#aaff56\" id=\"svg_1\" rx=\"86.5\" ry=\"16.86275\" stroke=\"#000\" stroke-width=\"1.5\"><\/ellipse> <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=\"88.66827\" x2=\"175.16827\" y1=\"158.18071\" y2=\"157.78725\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_6\" stroke=\"#bf0000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-width=\"1.5\" x1=\"87.83654\" x2=\"87.83653\" y1=\"2.65\" y2=\"158.91143\"><\/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\" x1=\"87.83653\" x2=\"175.16826\" y1=\"2.65\" y2=\"155.53888\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_8\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"87.83653\" x2=\"3\" y1=\"2.65\" y2=\"155.53888\"><\/line> <ellipse cx=\"17.13942\" cy=\"148.79378\" fill=\"#d4ffaa\" id=\"svg_9\" rx=\"2.49519\" ry=\"3.37255\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"37.10096\" cy=\"145.42123\" fill=\"#d4ffaa\" id=\"svg_10\" rx=\"2.49519\" ry=\"3.37255\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"55.8149\" cy=\"141.48659\" fill=\"#d4ffaa\" id=\"svg_11\" rx=\"2.91106\" ry=\"2.81046\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"73.69711\" cy=\"140.36241\" fill=\"#d4ffaa\" id=\"svg_12\" rx=\"2.49519\" ry=\"2.81046\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"94.07451\" cy=\"139.80032\" fill=\"#d4ffaa\" id=\"svg_13\" rx=\"2.07933\" ry=\"3.37255\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"112.37259\" cy=\"141.48659\" fill=\"#d4ffaa\" id=\"svg_14\" rx=\"2.07933\" ry=\"2.81046\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"130.2548\" cy=\"142.04868\" fill=\"#d4ffaa\" id=\"svg_15\" rx=\"2.49519\" ry=\"4.49673\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"147.72115\" cy=\"143.73496\" fill=\"#d4ffaa\" id=\"svg_16\" rx=\"2.49519\" ry=\"3.93464\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"161.02884\" cy=\"147.6696\" fill=\"#d4ffaa\" id=\"svg_17\" rx=\"1.66346\" ry=\"4.49673\" stroke=\"null\" stroke-width=\"1.5\"><\/ellipse> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_18\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"99.48076\" x2=\"88.66826\" y1=\"22.88529\" y2=\"40.87222\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_19\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"109.46153\" x2=\"87.0048\" y1=\"39.74803\" y2=\"80.21862\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_20\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"121.10576\" x2=\"88.66826\" y1=\"61.10751\" y2=\"121.81339\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_21\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"135.24519\" x2=\"95.32211\" y1=\"83.59117\" y2=\"157.78725\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_22\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"149.38461\" x2=\"122.76923\" y1=\"106.07483\" y2=\"157.78725\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_23\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"162.6923\" x2=\"149.38461\" y1=\"131.93104\" y2=\"160.03561\"><\/line> <ellipse cx=\"87.83653\" cy=\"91.46045\" fill=\"none\" fill-opacity=\"null\" id=\"svg_24\" rx=\"16.63462\" ry=\"4.49673\" stroke=\"#bf0000\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"89.5\" cy=\"86.96372\" fill=\"#d4ffaa\" id=\"svg_25\" rx=\"9.14904\" ry=\"3.37255\" stroke-width=\"1.5\"><\/ellipse> <text fill=\"#bf0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_26\" stroke=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8141846642937637,-0.2296932733956908,0.16993938334606296,1.1004673372821134,-12.32680840036043,23.589388448521802) \" x=\"90.31546\" xml:space=\"preserve\" y=\"84.50678\">><\/text> <rect fill=\"none\" height=\"11.24183\" id=\"svg_28\" stroke=\"#000000\" stroke-width=\"1.5\" width=\"8.31731\" x=\"87.83653\" y=\"146.54542\"><\/rect> <\/g> <\/svg><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2025-05-31 08:22:02","option_type":"txt","len":2},{"id":"11790","post_id":"7996","mon_id":"1159278","chapter_id":"1159334","question":"\u0110áy c\u1ee7a hình tr\u1ee5 là gì?<\/p>","options":["A.<\/strong> Hình vuông.","B.<\/strong> Hình ch\u1eef nh\u1eadt.","C.<\/strong> Hình tròn.","D.<\/strong> Hình tam giác."],"correct":"3","level":"1","hint":"","answer":"Ch\u1ecdn C.<\/strong> Hình tròn.<\/span><\/p>\u0110áy c\u1ee7a hình tr\u1ee5 là hình tròn.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2025-05-31 08:23:00","option_type":"txt","len":2},{"id":"11791","post_id":"7996","mon_id":"1159278","chapter_id":"1159334","question":"K\u1ebft lu\u1eadn nào sau \u0111ây sai<\/strong>?<\/p>","options":["A.<\/strong> Trong hình nón, m\u1ecdi \u0111\u01b0\u1eddng sinh b\u1eb1ng nhau.","B.<\/strong> Trong hình nón, \u0111\u01b0\u1eddng cao vuông góc v\u1edbi bán kính \u0111\u01b0\u1eddng tròn \u0111áy.","C.<\/strong> Trong hình nón, ch\u1ec9 có m\u1ed9t \u0111\u01b0\u1eddng tròn \u0111áy.","D.<\/strong> Trong hình nón có vô s\u1ed1 \u0111\u1ec9nh."],"correct":"4","level":"1","hint":"","answer":"K\u1ebft lu\u1eadn sai là D.<\/strong> Trong hình nón có vô s\u1ed1 \u0111\u1ec9nh.<\/span><\/p>Hình nón có duy nh\u1ea5t m\u1ed9t \u0111\u1ec9nh.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2025-05-31 08:24:18","option_type":"txt","len":3}]}