解题方法
1 . 如图所示的几何体由等高的
个圆柱和
个圆柱拼接而成,点
为弧
的中点,且
四点共面
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
为正方形,且四面体
的体积为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796cf8748bd5fdb5f6602be180e9c830.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92d220be10b55272aab5bacd9f69721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
您最近一年使用:0次
2021-03-11更新
|
443次组卷
|
3卷引用:贵州省黔东南州2021届高三高考模拟考试数学(文)试题
贵州省黔东南州2021届高三高考模拟考试数学(文)试题陕西省榆林市2021届高三下学期二模文科数学试题(已下线)解密13 空间几何体(分层训练)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练
名校
解题方法
2 . 如图所示,在三棱柱
中,M为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742622851866624/2743036705185792/STEM/f83cddb709ab405f8eb506f80a2379a0.png?resizew=241)
(1)求证∶![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)若
⊥平面ABC,
,AB=AC=AA1=2,求点B到平面AB1M的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2021/6/14/2742622851866624/2743036705185792/STEM/f83cddb709ab405f8eb506f80a2379a0.png?resizew=241)
(1)求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770b4f16694b2bd79a1a93d776a82680.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
您最近一年使用:0次
2021-06-14更新
|
1238次组卷
|
4卷引用:贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(文)试题
贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(文)试题安徽省100名校2020届高三下学期攻疫联考数学(文)试题(已下线)考点32 直线、平面平行的判定及其性质-备战2022年高考数学(文)一轮复习考点帮湖北省武汉外国语学校2020-2021学年高一下学期期末数学试题
解题方法
3 . 如图,
平面
,四边形
为直角梯形,
.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
.
(2)若
,点
在线段
上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48851e423f9000c3d8a49b1ad4db3d33.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4e97a4bd7675f12f73266254dd435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297f713ddbcc4578e73c8afe3a52abfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c56fdffb50f1e47bd067d39e7ebe3c0.png)
您最近一年使用:0次
2021-01-20更新
|
421次组卷
|
2卷引用:贵州省龙里县九八五实验学校2020-2021学年高二上学期期末质量检测数学(文)试题
解题方法
4 . 如图,在四棱锥
中,四边形
是矩形,
,
是正三角形,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730069253390336/2763232167256064/STEM/c7bfb581-3f8d-4cdd-b815-4d342dd53311.png?resizew=251)
(1)求三棱锥
的体积;
(2)若
分别是
,
的中点,求证∶
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8e49d68afab33806a63d25a0861c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730069253390336/2763232167256064/STEM/c7bfb581-3f8d-4cdd-b815-4d342dd53311.png?resizew=251)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1978b59fd41a7e45b66355645142aa4b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
解题方法
5 . 如图1,等腰梯形
,
.
沿
折起得到四棱锥
(如图2),G是
的中点.
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/4b76fd412c90499d871e2c5d6ef3895a.png?resizew=176)
(1)求证
平面
;
(2)当平面
平面
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aeccc147f407f574f7d8efd7d0d0636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bc34d1771fb14c101911660eaa075b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/d0f908f6fe1d43dfaf7d8c4e3ddf7666.png?resizew=216)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/4b76fd412c90499d871e2c5d6ef3895a.png?resizew=176)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55537f7dbac74c17fe0dc386dcdab3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd45625bf31756fbaf1c415c6e5bf79.png)
(2)当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62a0adbe458148298b3dfb61c4373b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fb98facc6b8400726136deadd3f1e7.png)
您最近一年使用:0次
6 . 圆柱内有一个四棱柱,四棱柱的底面是圆柱底面的内接正方形.已知圆柱表面积为
,且底面圆直径与母线长相等,求四棱柱的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2804428c789eff0c917c50ac9aae0961.png)
您最近一年使用:0次
7 . 已知圆台的上下底面半径分别为
,母线长为
.求:
(1)圆台的高;
(2)圆台的体积.
注:圆台的体积公式:
,其中
,S分别为上下底面面积,h为圆台的高.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1eb7fd83811eadd44317029a0f6eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(1)圆台的高;
(2)圆台的体积.
注:圆台的体积公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ca9e4f983b8b70755c0f781e390a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
您最近一年使用:0次
2020-12-16更新
|
400次组卷
|
5卷引用:贵州省平塘民族中学2021-2022学年高二上学期第一次月考数学试题
8 . 如图,在四棱锥P-ABCD中,
为正三角形,四边形ABCD为矩形,且平面PAB⊥平面ABCD,AB=2,PC=4
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609273135898624/2611427598327808/STEM/aa3685c72352404cb37106ddc569c4c3.png?resizew=154)
(1)求证:平面PAB⊥平面PAD
(2)若点M是PD的中点,求三棱锥P-ABM的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609273135898624/2611427598327808/STEM/aa3685c72352404cb37106ddc569c4c3.png?resizew=154)
(1)求证:平面PAB⊥平面PAD
(2)若点M是PD的中点,求三棱锥P-ABM的体积
您最近一年使用:0次
2020-12-10更新
|
393次组卷
|
2卷引用:贵州省贵阳市第一中学2021届高考适应性月考卷(三)文科数学试题
9 . 如图,在三棱柱
中,侧棱垂直于底面,
,
,
,
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/c9b84af2-2abc-42fc-b395-2dbd41e2f3c9.png?resizew=122)
(1)求证:平面
平面
;
(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/16cfb38323095090b0fe5eee70b24210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.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/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/c9b84af2-2abc-42fc-b395-2dbd41e2f3c9.png?resizew=122)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
您最近一年使用:0次
2020-12-02更新
|
487次组卷
|
3卷引用:贵州省六盘水市第二中学2022-2023学年高二上学期9月月考数学试题
解题方法
10 . 如图,四棱锥
的底面为平行四边形,平面
平面ABCD,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498163982155776/2500057368231936/STEM/a014cf8c6f4449eba60c566f90e34a8c.png?resizew=318)
(1)证明:
平面PAD,且
.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96d8b87b09e3ca52d91b3f24365f251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88197da08544c0dd0f8fb1359797ac9b.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498163982155776/2500057368231936/STEM/a014cf8c6f4449eba60c566f90e34a8c.png?resizew=318)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2020-07-06更新
|
350次组卷
|
3卷引用:贵州省黔南州2019—2020学年度高二下学期期末考试数学(文)试题