解题方法
1 . 如图,在多面体
中,
平面
,四边形
为菱形,四边形
为梯形,且
,
,
,
,M为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/db841ebd-661c-4385-806f-5d39c74aa86d.png?resizew=173)
(1)求证:
平面
;
(2)求平面
将多面体
分成的两个部分的体积之比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/db841ebd-661c-4385-806f-5d39c74aa86d.png?resizew=173)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d27ff0b39832f094ec51e28721d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75445760eb6944d4c380707bc83ab36.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6114761b369162cda06f08e31c23fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2 . 我国数学史上有一部堪与欧几里得《几何原本》媲美的书,这就是历来被尊为算经之首的《九章算术》,其中卷五《商功》有一道关于圆柱体的体积试题:今有圆堡,周四丈八尺,高一丈一尺,问积几何?其意思是:今有圆柱形的土筑小城堡,底面周长是4丈8尺,高1丈1尺,问它的体积是多少? (注:1丈=10尺)若
取3,估算小城堡的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
A.1998立方尺 | B.2012立方尺 | C.2112立方尺 | D.2324立方尺 |
您最近一年使用:0次
2017-10-15更新
|
455次组卷
|
5卷引用:【市级联考】广东省珠海市2018-2019学年高一第一学期期末学生学业质量监测数学试题
解题方法
3 . 某简单几何体的三视图如图所示,则该几何体的体积是______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/82d371dc-72fe-4981-9842-60f1ebddcc8f.png?resizew=124)
您最近一年使用:0次
11-12高一上·广东东莞·期末
解题方法
4 . 如图,正方形
的边长为1,正方形
所在平面与平面
互相垂直,
是
的中点.
(1)求证:
平面
;
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/d6c5a08cbae746979405ee12c3f845d3.png)
(2)求证:
;
(3)求三棱锥
的体积.
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/90cd07ee6933459d874efbbf13591d41.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/e6b6b9bdc79d4f94927976d669a4d5b0.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/90cd07ee6933459d874efbbf13591d41.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/250059b13f2440eeb25da7eed33a2236.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/6c6f24b8ed1b4980be4017bdda08d3b0.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/9fe00274328b462192303570b05359cb.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/da0cee6af4ab4ea49d5f1d02e1465167.png)
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/d6c5a08cbae746979405ee12c3f845d3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c7274d4381e1cdd7483a543b1fde7c.png)
(3)求三棱锥
![](https://img.xkw.com/dksih/QBM/2011/2/22/1570005425086464/1570005430362112/STEM/eeb23cc551664abf8b835a0649a95f12.png)
您最近一年使用:0次
解题方法
5 . 某几何体的三视图如图所示,则该几何体的体积为__________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/07256bed-5db3-4888-9ffc-f435259686fa.png?resizew=135)
您最近一年使用:0次
6 . 如图,在直四棱柱
中,点
分别在
上,且
,
,点
到
的距离之比为
,则三棱锥
和
的体积比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2159917efc5ac155784ddae3b171bc14.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e86e3991200297ad172455e5ea93f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba18b603ae4059b9168725edb0eca52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a4697e08455012e1df351e6f38009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1dcdac71e394e495d069f64e1f1ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca839944d0ac5155e2d78c094899b789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2159917efc5ac155784ddae3b171bc14.png)
![](https://img.xkw.com/dksih/QBM/2013/9/13/1571354999611392/1571355004985344/STEM/59ac1fcfb49849348f4eff5d1b0515ea.png?resizew=265)
您最近一年使用:0次
2016-12-02更新
|
1201次组卷
|
4卷引用:2013-2014学年广东广州执信中学高一上学期期末数学试卷
(已下线)2013-2014学年广东广州执信中学高一上学期期末数学试卷(已下线)2014届江苏省苏州市高三暑假自主学习测试理科数学试卷【市级联考】江苏省苏州市常熟市2018-2019学年高二(上)期中数学试卷安徽省铜陵市第一中学2018-2019学年高二上学期期中数学试题
解题方法
7 . 某几何体的三视图如图所示,其中俯视图为半径为
的四分之一个圆弧,则该几何体的体积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/d75f8384-0674-4708-a23d-deff08a445a6.png?resizew=249)
您最近一年使用:0次
2016-12-03更新
|
934次组卷
|
4卷引用:2016-2017学年广东省珠海市高一上学期期末考试B数学试卷
8 . 已知正方体![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/4/cb8b461d-5911-4a5b-8d7e-5d813f8bcc16.png?resizew=200)
(1)设正方体棱长为
,求三棱锥
的体积
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/4/cb8b461d-5911-4a5b-8d7e-5d813f8bcc16.png?resizew=200)
(1)设正方体棱长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6189a4d33d37927684c7a68f32794373.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f79d72a7034e21c87b1a76dbc4e7374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
您最近一年使用:0次
名校
9 . 如图,已知正四棱锥V-ABCD中
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafddfd80f69337909f6eac0f0dbfd59.png)
,求正四棱锥V-ABCD的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a89b6d48e3975d0aa7036d09bbc3b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafddfd80f69337909f6eac0f0dbfd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/523c8178a08e632987664eda1800bc38.png)
![](https://img.xkw.com/dksih/QBM/2019/1/14/2118435714637824/2119185027301376/STEM/bda14193b15a42efb9ff28ca6375bd34.png?resizew=156)
您最近一年使用:0次
2016-12-04更新
|
301次组卷
|
3卷引用:广东省揭阳市惠来县第一中学2019-2020学年高一上学期第二次阶段考试数学试题
名校
解题方法
10 . 如图,在直三棱柱
中,
,
,
,
,
分别为
,
,
的中点.
与平面
的位置关系,并说明理由;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b51da47ab8433342f7a319e412fefae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d954212889c8aae3cbb84de7cb362a.png)
您最近一年使用:0次