解题方法
1 . 如图,正方形
中,
、
分别是
,
的中点,沿
、
、
把这个正方形折成一个四面体,使
、
、
三点重合,重合后的点记为
.若四面体
外接球的表面积为
,则正方形
的边长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89151b3418437067124ede7499455d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2804428c789eff0c917c50ac9aae0961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/5/26/2471209520775168/2471891421970432/STEM/da4fe79a55014eca82518f36534f09cc.png?resizew=154)
您最近一年使用:0次
名校
解题方法
2 . 如图,正方形
中,E,F分别是
,
的中点,沿
,
,
把这个正方形折成一个四面体,使B,C,D三点重合,重合后的点记为G.若四面体
外接球的表面积为
,则正方形
的边长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89151b3418437067124ede7499455d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/9/505e65db-b4ae-4098-b778-4981865bab25.png?resizew=129)
您最近一年使用:0次
2020-05-27更新
|
309次组卷
|
4卷引用:广西南宁市2019-2020学年高三第二次适应性测试数学(理)试题
广西南宁市2019-2020学年高三第二次适应性测试数学(理)试题上海市复旦大学附属中学2023-2024学年高二上学期开学考试数学试题上海大学附属中学2023-2024学年高二上学期9月月考数学试题(已下线)第11章 简单几何体(易错必刷30题6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(沪教版2020必修第三册)
名校
解题方法
3 . 如图,实心铁制几何体
由一个直三棱柱与一个三棱锥构成,已知
,
,
,
,且
,
底面
.某工厂要将其铸成一个实心铁球,假设在铸球过程中原材料将损耗
,则铸得的铁球的半径为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7379b3cdd5c851920baf224a6a66665e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cee9f11d7abbfb4da752222be792195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4f3ab11a8b54cf29685b1f750cb130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b96c99a068ef12bbe5a1757cc4a474c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462d2afc6d249a6c73002406cb88961b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23466fd31d0666cb9f65dced41188359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/645a9b8a-4ee2-4335-83de-bd679d5fb377.png?resizew=128)
您最近一年使用:0次
2020-05-23更新
|
995次组卷
|
14卷引用:广西2019-2020学年高三5月质量检测数学(理科)试题
广西2019-2020学年高三5月质量检测数学(理科)试题广西2019-2020学年高三5月联考数学(理科)数学试题广西钦州市2019-2020学年高三5月质量检测数学(文)试题广西玉林市、百色市2020届高三(5月份)高考数学(文科)质检试题(一模)广西玉林市、百色市2020届高三(5月份)高考数学(理科)质检试题(一模)四川省资阳市2020届高三模拟考试数学(理科)试题(已下线)第24练 构件几何体的结构,体积-2021年高考数学一轮复习小题必刷(山东专用)广东省中山市2021届高三上学期六校第一次联考数学试题广西玉林市育才中学2021届高三10月月考数学(文)试题(已下线)热点08 立体几何-2021年高考数学【热点·重点·难点】专练(山东专用)(已下线)专题13 空间几何体-备战2022年高考数学学霸纠错(全国通用)安徽省滁州市定远中学2023届高三下学期毕业生调研考试(二)数学试卷(已下线)8.2 简单几何体的表面积与体积-2020-2021高中数学新教材配套提升训练(人教A版必修第二册)河北省承德市双滦区实验中学2022-2023学年高一下学期5月月考数学试题
名校
解题方法
4 . 某几何体的三视图如图所示(单位:cm),则该几何体的表面积(单位:
)为( )
![](https://img.xkw.com/dksih/QBM/2020/5/20/2467035981668352/2467609561776128/STEM/59309c11-c46b-4325-ae56-9fcefaac4ed4.png?resizew=403)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b41821b589c7c0b87a1470c57979a4.png)
![](https://img.xkw.com/dksih/QBM/2020/5/20/2467035981668352/2467609561776128/STEM/59309c11-c46b-4325-ae56-9fcefaac4ed4.png?resizew=403)
A.32 | B.36 | C.40 | D.48 |
您最近一年使用:0次
2020-05-21更新
|
271次组卷
|
6卷引用:2020届上海市虹口区高三下学期二模数学试题
2020届上海市虹口区高三下学期二模数学试题广西桂林市、崇左市2021届高三5月份数学(理)第二次联考试题广西桂林市、崇左市2021届高三5月份高考数学(文)第二次联考试题(已下线)考向22 空间几何体-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)课时44 几何体的表面积与体积-2022年高考数学一轮复习小题多维练(上海专用)上海市复旦大学附属中学2020-2021学年高二下学期期末数学试题
5 . 一个圆锥恰有三条母线两两夹角为
,若该圆锥的侧面积为
,则该圆锥的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/563ea4aa5c8936a2959fe140cd8f5506.png)
您最近一年使用:0次
2020-05-19更新
|
279次组卷
|
3卷引用:广西桂林、崇左、贺州2019-2020学年高三5月联合模拟考试数学(文)试题
名校
6 . 如图是一个由正四棱锥
和正四棱柱
构成的组合体,正四棱锥的侧棱长为6,
为正四棱锥高的4倍.当该组合体的体积最大时,点
到正四棱柱
外接球表面的最小距离是
![](https://img.xkw.com/dksih/QBM/2020/5/12/2461211996626944/2461863669440512/STEM/ee1762c5-f669-48ee-ba3d-bc198cba8987.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724625d4f91f0e48712d6d143a6389b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2020/5/12/2461211996626944/2461863669440512/STEM/ee1762c5-f669-48ee-ba3d-bc198cba8987.png?resizew=141)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-05-13更新
|
1502次组卷
|
6卷引用:天一大联考2019-2020学年高三毕业班阶段性测试(五)理科数学试题
名校
解题方法
7 . 在三棱锥
中,已知
平面
,且
为正三角形,
,点
为三棱锥
的外接球的球心,则点
到棱
的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc13307a688f0820d9bc8b946b04b7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
您最近一年使用:0次
2020-05-13更新
|
1199次组卷
|
8卷引用:2020届广西柳州市高三毕业班4月模拟(三模)文科数学试题
解题方法
8 . 如图,菱形
的边长为4,
,
为
中点,将
沿
折起使得平面
平面
,
与
相交于点
,
是棱
上的一点且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/5747de02-217e-4d6b-99b7-70ea87cb48e8.png?resizew=409)
(1)求证:
∥平面
;
(2)求四面体
的体积.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8210bde150614e503abe6cf5945d2e34.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/5747de02-217e-4d6b-99b7-70ea87cb48e8.png?resizew=409)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5048f9f58dc85ecf61756611c7cd2923.png)
您最近一年使用:0次
2020-05-13更新
|
625次组卷
|
2卷引用:2020届广西柳州市高三毕业班4月模拟(三模)文科数学试题
9 . 设球
与圆锥
的体积分别为
,
,若球
的表面积与圆锥
的侧面积相等,且圆锥
的轴截面为正三角形,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a8c34f622f1b979feed5ae6ae5d0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a8c34f622f1b979feed5ae6ae5d0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a8c34f622f1b979feed5ae6ae5d0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f737b04ce09bc7e1ed86dc9b3c85203b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-09-02更新
|
459次组卷
|
8卷引用:第31讲 空间几何体的结构及其表面积、体积-2021年新高考数学一轮专题复习(新高考专版)
名校
解题方法
10 . 如图所示,在四棱柱
中,侧棱
平面
,底面
是直角梯形,
,
,
.
(1)证明:
平面
;
(2)若四棱锥
的体积为
,求四棱柱
的侧面积.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8146229a98505930b9e59bea6a3651bf.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54ed3e5c70f86a4f45fd67641b304d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5991e9ec7666f533a528a4173c58f0ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/2636d8f0-28db-440c-aae3-f4a651f3d631.png?resizew=180)
您最近一年使用:0次
2020-05-06更新
|
162次组卷
|
3卷引用:广西南宁市2019-2020学年高三毕业班第一次适应性测试数学(文)试题