如图,已知正方体
的棱长为2,E,F分别为AB,BC的中点,则下列说法正确的是________ .(填写所有正确说法的序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/5eb42652-409e-4ff4-ba70-783d263418aa.png?resizew=180)
①平面
截正方体
所得截面图形的周长为
;
②点B到平面
的距离为
;
③平面
将正方体
分割成两部分,较小一部分的体积为
;
④三棱锥
的外接球的表面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/5eb42652-409e-4ff4-ba70-783d263418aa.png?resizew=180)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab44d33142e571bf155f367a0224a422.png)
②点B到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e23ab2a5db0d58b522f1e2699bfe60.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9717d0d1aa041214f440e171b54465.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2517c94dd8e4bd6e1c19778905f7640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375025f01ec49e6d50e45cce5fee8d88.png)
23-24高三上·全国·阶段练习 查看更多[2]
更新时间:2023-01-15 22:03:40
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