Problem Solving

试题详情

题目：

An equilateral triangle that has an area of 9 3^1/2 is inscribed in a circle. What is the area of the circle?

选项:

A、6pi
B、9pi
C、12 pi
D、9pi 3^1/2
E、18pi 3^1/2

答案:

C

提问：

点此查看答疑
说是9倍根号3，这是怎么看出来的？然后inscribed应该是三角形在圆的里面吧？之前录音没有很听懂，麻烦老师解释一下怎么求出的圆的半径。
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提问：

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An equilateral triangle that has an area of 9 3^1/2 is inscribed in a circle. What is the area of the circle? 6pi 9pi 12 pi 9pi 3^1/2 18pi 3^1/2
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提问：

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录音错误，无讲解。恳请老师解答。
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