如图所示,在三棱锥
中,
平面
,
,
,
,
,则三棱锥
外接球的表面积为( )
![](https://img.xkw.com/dksih/QBM/2021/2/26/2666219351867392/2666278591283200/STEM/a6c9e301381345219040ea098085adc1.png?resizew=218)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ed75e65e7374c38ffb1f75259a8beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://img.xkw.com/dksih/QBM/2021/2/26/2666219351867392/2666278591283200/STEM/a6c9e301381345219040ea098085adc1.png?resizew=218)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21高三下·全国·阶段练习 查看更多[1]
(已下线)全国100所名校2021届高三下学期最新高考模拟示范卷数学02卷
更新时间:2021-02-26 11:00:35
|
相似题推荐
单选题
|
较易
(0.85)
名校
【推荐1】已知边长为1的正方体的所有顶点在一个球面上,则这个球的表面积为
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐2】球面上有三点
组成这个球的一个截面的内接三角形三个顶点,其中
,
,球心
到这个截面的距离为球半径的一半,则球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f1844834ef0315a704d8e2fba77544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐1】在四面体ABCD中,
,
,异面直线AC与BD所成的角为30°,二面角
为锐二面角,
、
、
,则四面体ABCD的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915e8e775538d41debf1933102c6b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442af36f0d841dc892f0750462b8a6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
A.![]() | B.3 | C.5 | D.10 |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】已知正方体
的棱长为1,棱
的中点为E,
与
交于点O.若平面
经过点E且与
垂直,则平面
该正方体所得截面的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec275f823ae17afdba53301fcbd2aa43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐1】已知
中,
为斜边
上一动点,沿
将三角形
折起形成三棱锥
使平面
平面
,记
,当
最短时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abc42827a6e5c7fa78811ccda06bf35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df5935c893580c77ab6fa6eb0a70bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7008d26afafe6d1c9e0be6f7c0b11f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8a7a7db5583ad8f00782552f871fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b489c25405ce48699d4f0a62820bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282fefbe5b3b212a31dfd75d6b38de9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】已知
是两条不同的直线,
是两个不同的平面,则下列判断错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次