《九章算术》中将底面为直角三角形,且侧棱垂直于底面的三棱柱称为堑堵;将底面为矩形,一侧棱垂直于底面的四棱锥称为阳马,如图,在堑堵
中,
,
,
,阳马
的外接球表面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e706a36748536394b90a36f4df7be0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34f6658a6fa46b1597f382a3455ad04.png)
更新时间:2023-07-13 14:34:17
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【推荐1】某种游戏中,用黑、黄两个点表示黑、黄两个“电子狗”,它们从棱长为1的正方体
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【推荐2】如图,在长方体
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