试题与答案

已知三边长分别为4、5、6的△ABC的外接圆恰好是球O的一个大圆,P为球面上一点

题型:选择题

题目:

已知三边长分别为4、5、6的△ABC的外接圆恰好是球O的一个大圆,P为球面上一点,若点P到△ABC的三个顶点的距离相等,则三棱锥P-ABC的体积为:(  )

A.8

B.10

C.20

D.30

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:本题考核法的分类。根本法和普通法是根据法的内容、效力和制定程序所作的分类。

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