1 . 阳马,中国古代算数中的一种几何形体,是底面为长方形,两个三角面与底面垂直的四棱锥体.如图,四棱锥P-ABCD就是阳马结构,PD⊥平面ABCD,且
,
,
.
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec03e804f0cea1db5cde2aa185056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c4336d602211dbca2f1c5fc511f45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae78e8bb0d1a42759b5464d23d63a601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877e0b42cc7f2add2521ba2d876af2e4.png)
您最近一年使用:0次
2023-04-13更新
|
1810次组卷
|
5卷引用:河南省许昌市鄢陵县职业教育中心(升学班)2022-2023学年高二下学期期中考试数学试题
河南省许昌市鄢陵县职业教育中心(升学班)2022-2023学年高二下学期期中考试数学试题广西柳州高级中学、南宁市第三中学2023届高三联考数学(文)试题第13章 立体几何初步(B卷·能力提升)-【单元测试】2022-2023学年高一数学分层训练AB卷(苏教版2019必修第二册)广东省肇庆市德庆县香山中学2022-2023学年高一下学期5月月考数学试题(已下线)第六章立体几何初步章末二十种常考题型归类(2)-【帮课堂】(北师大版2019必修第二册)
名校
解题方法
2 . 已知圆锥的底面半径为3,母线长为5,在圆锥内部放置一个内接圆柱(圆柱的一底面与圆锥的底面重合),
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/79867704-0194-4304-9791-5855dac16fcd.png?resizew=124)
(1)求圆柱的体积V与其底面半径r的函数关系式;
(2)求圆柱的体积V最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/79867704-0194-4304-9791-5855dac16fcd.png?resizew=124)
(1)求圆柱的体积V与其底面半径r的函数关系式;
(2)求圆柱的体积V最大值.
您最近一年使用:0次
解题方法
3 . 在如图所示的几何体
中,
底面
,底面
是边长为4的正方形,其中心为P,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/42562408-3414-4b7d-babd-47f920f365fa.png?resizew=195)
(1)求三棱锥
的体积;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fc1129846f37afdafd751627c450d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd3bc5c12b7f2e3974daf5d129f8b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b70c03f14f9f5c55c5b8d536437b90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/42562408-3414-4b7d-babd-47f920f365fa.png?resizew=195)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437c9774700f6c066b3e19d17d54b368.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c9c2c831a0552a7c934365bc49ad3f.png)
您最近一年使用:0次
4 . 如图,在棱长为
的正方体
中,
、
分别是棱
、
上的动点,且
.
![](https://img.xkw.com/dksih/QBM/2022/9/27/3075680256434176/3077054814347264/STEM/a60d55b91b814c928cff229a2e11b70e.png?resizew=189)
(1)求证:
;
(2)当三棱锥
的体积取得最大值时,求平面
与平面
的夹角余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95628327dc58037e5368f4404c05ec39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://img.xkw.com/dksih/QBM/2022/9/27/3075680256434176/3077054814347264/STEM/a60d55b91b814c928cff229a2e11b70e.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03022e8d9e2d2f962c6baa39463c6714.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5a44046c8232c8b81924036c6ba9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
2022-09-29更新
|
495次组卷
|
6卷引用:河南省开封市五县2022-2023学年高二上学期第一次月考联考数学试题
名校
解题方法
5 . 如图,在四棱锥
中,
平面
,底面
为矩形,
,G为
的重心,M为线段
的中点,
与
交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/aeab79dc-6152-4bee-8032-4837ca38d0c7.png?resizew=183)
(1)当
时,证明:
平面
;
(2)当平面
与平面
所成锐二面角为
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d2a8070f1a70c76686847697146383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/28/aeab79dc-6152-4bee-8032-4837ca38d0c7.png?resizew=183)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36148e5b0d89ba45bd98b91da00bf2b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac3bbe7410b0176a1b3f9410ab761be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c69f7f73a7f0e0b5a0a82a51f8ab28.png)
您最近一年使用:0次
2022-09-27更新
|
509次组卷
|
5卷引用:河南省中原名校2022-2023学年高二上学期第一次联考数学试题
河南省中原名校2022-2023学年高二上学期第一次联考数学试题河南省夏邑县会亭高级中学2022-2023学年高二上学期第一次月考数学试题广西柳州市第三中学2022-2023学年高二上学期10月月考数学试题高二数学试题-中原名校2022-2023学年高二上学期第一次联考试题(已下线)第二章 立体几何中的计算 专题四 空间体积的计算 微点1 空间图形体积的计算方法【基础版】
解题方法
6 . 如图,在正方体
中,
,E,F分别是AB,BC的中点,平面
分别与
,
交于M,N两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/51520c10-5553-46e7-afc0-b051473993d8.png?resizew=196)
(1)证明:
.
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/51520c10-5553-46e7-afc0-b051473993d8.png?resizew=196)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f792b750e5a53cd089885ebe02c470b.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e5864a623b5b144c7faa22ebd54318.png)
您最近一年使用:0次
7 . 如图,已知圆锥的顶点为P,底面圆
的直径AB长为4,点C是圆上一点,
,点D是劣弧
上的一点,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/d2732e5a-b0a6-4afa-8de8-fa4e48bb1e41.png?resizew=163)
(1)证明:平面
平面POD.
(2)当三棱锥
的体积为
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfb836792b1eebfbd08a6f46fae580e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c762937111e04018cad6b507a7dedc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baceb049bf16ed0fd33639fdda0ec5ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29f3123f57b56444be9bc048eacc82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/d2732e5a-b0a6-4afa-8de8-fa4e48bb1e41.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7392e9e2da5a0e9ecab0f79992656328.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2a4541d85e8710408c45c99950b6af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0297943fae12e34fab38c541002b15.png)
您最近一年使用:0次
2022-09-19更新
|
421次组卷
|
2卷引用:河南省创新联盟2022-2023学年高二上学期第一次联考(B卷)数学试题
8 . 如图,在直四棱柱
中,四边形
是菱形,
分别是棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/1bd4ce80-71dd-4eca-ad91-cd2879f0871b.png?resizew=202)
(1)证明:平面
平面
.
(2)若
,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/1bd4ce80-71dd-4eca-ad91-cd2879f0871b.png?resizew=202)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e84d6e368f8368f8301c4cd66d6dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95196d4658088f565e495c005cfed5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e57c789cfd4b0be7dbf63aa99435656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2022-08-23更新
|
446次组卷
|
4卷引用:河南省豫西名校2022-2023学年高二上学期开学考试数学试题
解题方法
9 . 如图,在四棱锥
中,底面ABCD为等腰梯形,
,
,E为AP的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/ea8f4798-8e8d-4286-9de4-f01aa876143c.png?resizew=157)
(1)证明:
平面PBC.
(2)求四棱锥
外接球的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05ef25a6b40700f28f81782b1c3b9d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/ea8f4798-8e8d-4286-9de4-f01aa876143c.png?resizew=157)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
您最近一年使用:0次
2022-08-23更新
|
379次组卷
|
3卷引用:河南省豫西名校2022-2023学年高二上学期开学考试数学试题
解题方法
10 . 已知三棱柱
中,
,
,
平面ABC,E为AB的中点,
为
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/a5daaa2b-7be0-46a9-8bf7-48cd79d44fee.png?resizew=190)
(1)求证:
;
(2)当
为
的中点时,求三棱锥
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa345e314208fcb6b3b29cb8130be32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/a5daaa2b-7be0-46a9-8bf7-48cd79d44fee.png?resizew=190)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccd5c41c921836b50f8e18abfdc5df3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
您最近一年使用:0次