名校
解题方法
1 . 已知完全封闭且内部中空的圆柱底面的半径为
,母线长为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a203b5e8-b79f-497d-ac65-8813b68e26c6.png?resizew=217)
(1)当
,
时,在圆柱内放一个半径为1的实心球,求圆柱内空余部分的体积;(结果用精确值表示)
(2)如图,当
,
时,平面
与圆柱
底面所成锐二面角为45°,且平面
只与圆柱
侧面相交,设平面
与圆柱
侧面相交的轨迹为曲线
,半径为1的两个球分别在圆柱内平面
上下两侧且分别与平面
相切于点
、
,若以点
、
所在直线为
轴,线段
的中垂线为
轴建立平面直角坐标系,求证:曲线
是椭圆并写出椭圆标准方程;
(3)在(1)的条件下,在圆柱内部空余的地方放入和实心球、侧面及相应底面均相切的半径为
的同样大小的小球
个,当
取得最大值
时,求
的值.(结果用数字表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a203b5e8-b79f-497d-ac65-8813b68e26c6.png?resizew=217)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c572083c2af625b8222e19a53a5d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61318c3e8dd2eda4f1d95094c9a2b301.png)
(2)如图,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c572083c2af625b8222e19a53a5d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72dab760e63b18eb9162907a11614d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)在(1)的条件下,在圆柱内部空余的地方放入和实心球、侧面及相应底面均相切的半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c1936889914a33dfe984171144305.png)
您最近一年使用:0次
解题方法
2 . 如图,在直三棱柱
中,
是边长为2的正三角形,点
分别是棱
上的点,点
是线段
上一点,
.
![](https://img.xkw.com/dksih/QBM/2021/12/14/2872466576834560/2879689875234816/STEM/36bf91ae-fc37-4d5a-a95a-bcca830d560f.png?resizew=172)
(1)若
为中点,证明:
平面
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3d169c28e3a2cdb9abf322244609d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12857c14dd0482aae811748caede4420.png)
![](https://img.xkw.com/dksih/QBM/2021/12/14/2872466576834560/2879689875234816/STEM/36bf91ae-fc37-4d5a-a95a-bcca830d560f.png?resizew=172)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982d01f052709b72afeaf1015fc7acc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f21854ab7183c0bf7572f20b9bba81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在正三棱柱
中,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833275760254976/2833296692150272/STEM/7d495800-737c-4773-9ec9-9e6fd1874217.png?resizew=250)
(1)证明:
平面
;
(2)已知
,
,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833275760254976/2833296692150272/STEM/7d495800-737c-4773-9ec9-9e6fd1874217.png?resizew=250)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd597851c0db4e4de4769e10e09383b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e862713d078c4f06ec1f15ccd6f5a1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72d3b73315c93ed0cd16fa023677152.png)
您最近一年使用:0次
2021-10-20更新
|
477次组卷
|
2卷引用:广西钟山县钟山中学2021-2022学年高二上学期第三次(12月)月考数学试题
名校
解题方法
4 . 在如图所示的空间几何体中,平面
平面
与
均是等边三角形,
,
和平面
所成的角为
,且点
在平面
上的射影落在
的角平分线上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8c9edf40-6ae2-48e1-ba4e-1488b63efc2e.png?resizew=194)
(1)求证:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e179513f9fdf253e425fd9a4d2c3528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f941c5fba24bdeea8da41495323103e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/8c9edf40-6ae2-48e1-ba4e-1488b63efc2e.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64515eca2696cc35da2b5c698768ec31.png)
您最近一年使用:0次
5 . 祖暅(公元5-6世纪,祖冲之之子),是我国齐梁时代的数学家,他提出了一条原理:“幂势既同,则积不容异.”这句话的意思是:两个等高的几何体若在所有等高处的水平截面的面积相等,则这两个几何体的体积相等.该原理在西方直到十七世纪才由意大利数学家卡瓦列利发现,比祖暅晚一千一百多年.椭球体是椭圆绕其轴旋转所成的旋转体.如图将底面直径皆为
,高皆为
的椭半球体和已被挖去了圆锥体的圆柱体放置于同一平面
上,以平行于平面
的平面于距平面
任意高
处可横截得到
及
两截面,可以证明
总成立.据此,短轴
长为
,长半轴
为
的椭半球体的体积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f8a79e6a-b919-4e32-8662-840b5d55e8bc.png?resizew=228)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18436f0e2391b0ab7537a566fc28204c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1412bb5c926c15b192eefe0795015074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd79498dbcdfc8f158ac6acd69cdb133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5521fd7492c1a325a423571dee25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/f8a79e6a-b919-4e32-8662-840b5d55e8bc.png?resizew=228)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-04更新
|
355次组卷
|
3卷引用:重庆市万州第二高级中学2021-2022学年高二上学期10月月考数学试题
重庆市万州第二高级中学2021-2022学年高二上学期10月月考数学试题广东省梅州市2020-2021学年高一下学期期末数学试题(已下线)第九章 立体几何专练1—基本立体图形(基础练)-2022届高三数学一轮复习
6 . 如图所示,四棱锥
中,
菱形
所在的平面,
,点
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/99cfd6fc-4228-415a-aedd-25704a5ca33c.png?resizew=165)
(1)求证:平面
平面
;
(2)当
时,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](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/e075468e7fb0bf30229aec01a7205977.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/99cfd6fc-4228-415a-aedd-25704a5ca33c.png?resizew=165)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd06964bc180eeb26209b77a69ab763e.png)
您最近一年使用:0次
2021-07-03更新
|
551次组卷
|
4卷引用:四川省乐山市十校2021-2022学年高二上学期期中考试数学(文)试题
7 . 如图,在几何体
中,四边形
是菱形,且
,
平面
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/7f121158-b27e-4f45-a781-99be0eded452.png?resizew=191)
(
)证明:平面
平面
;
(
)若二面角
为
,求几何体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27fcafd4e3c295eed2ab9c92c3d4a36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179071147b940f5e2f80e74526cebf92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/7f121158-b27e-4f45-a781-99be0eded452.png?resizew=191)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2443a94bed3d2b1f95c04ebd61ac134a.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5617a404c5a3356753136e5a6b6d51e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
您最近一年使用:0次
2021-08-02更新
|
484次组卷
|
2卷引用:四川省眉山市彭山区第一中学2021-2022学年高二上学期10月月考数学(文)试题
名校
解题方法
8 . 如图,边长为
的等边
所在平面与菱形
所在平面互相垂直,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/915d88ac-80df-46d6-ae7f-523fec1081d4.png?resizew=216)
(1)求证:
平面
;
(2)求多面体
的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1433137fef4e88aa38f2503cec900358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7579755d7d17bd72d97b03df323aefa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e302e173e60f3e6136369d0c4908d5ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/915d88ac-80df-46d6-ae7f-523fec1081d4.png?resizew=216)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3521d6f223a2d7f597f8613c4530dd1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
您最近一年使用:0次
2020-08-27更新
|
794次组卷
|
14卷引用:四川省仁寿第一中学校南校区2020-2021学年高二5月第二次质量检测数学(文)试题
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15-16高三上·上海浦东新·期中
名校
9 . 如图,在四棱柱
中,侧棱
底面
,
,
,
,
,
,
,(
)
平面
;
(2)若直线
与平面
所成角的正弦值为
,求
的值;
(3)现将与四棱柱
形状和大小完全相同的两个四棱柱拼成一个新的四棱柱,规定:若拼成的新四棱柱形状和大小完全相同,则视为同一种拼接方案,问共有几种不同的拼接方案?在这些拼接成的新四棱柱中,记其中最小的表面积为
,写出
的解析式.(直接写出答案,不必说明理由)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c0ad79161fb29ec231dd0248623ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9740124a284f336f20c98695af04ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5cab760038d20eac10fe6108fbb334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f991c5086ba855802b0331c4e02e3f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223036d27be5914db50fbd5cb19d4212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4e6eb3663870ed202cc208eaf239dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)现将与四棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a84d7e5d6236009a8be655bd500fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a84d7e5d6236009a8be655bd500fd.png)
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2020-02-05更新
|
844次组卷
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5卷引用:上海市华东师范大学第二附属中学2020-2021学年高二下学期期中数学试题
(已下线)上海市华东师范大学第二附属中学2020-2021学年高二下学期期中数学试题北京市一零一中学2021-2022学年高二上学期期末考试数学试题(已下线)第一章 空间向量与立体几何(压轴必刷30题4种题型专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)(已下线)上海市华东师大二附中2016届高三上学期期中数学试题辽宁省实验中学2024届高三考前模拟数学试卷
10 . 如图,在直三棱柱
中,D是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/29136315-ec81-43aa-a85e-a81cf6daf1dc.png?resizew=179)
(1)求证:
平面
;
(2)若
,
,
,求几何体
的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/29136315-ec81-43aa-a85e-a81cf6daf1dc.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896e293411e2fd0da215ff20781cb36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ddb5cd565f3e96697aee202b9d510.png)
您最近一年使用:0次
2020-01-07更新
|
246次组卷
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5卷引用:四川省遂宁中学校2020-2021学年高二上学期第二次月考数学(文)试题