在正四棱柱
中,
,
,以顶点A为球心,2为半径作一个球,则球面与正四棱柱的表面相交所得到的弧长之和等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ea4bd288944d3ba3d6a319de869dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
更新时间:2023-02-19 07:35:44
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【知识点】 球的截面的性质及计算
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【推荐1】在正四面体
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【推荐2】已知正四棱锥
的底面长为6,高为4,若该四棱锥的五个顶点都在一个球面上,则球心到四棱锥侧面的距离为______ .
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