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标题: help a q of ps, 未在匯總找到 [打印本页]

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作者: wanlingH    时间: 2009-4-24 22:07
标题: help a q of ps, 未在匯總找到

[attachimg]70790[/attachimg]

In the figure above, a square is inscribed in a circle.  If the area of the square region is 16, what is the area of the circular region?

(A)  2π
                

(B)  4π
                

(C)  6π
                

(D)  12π
                

(E)  16π

Ac)

可以麻煩幫我解一下這題嗎??

讓人匪夷所思~~

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[此贴子已经被作者于2009-4-24 22:21:16编辑过]

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作者: songlovegt    时间: 2009-4-25 00:02
4*4 = 16
对角线即直径=4根号２

area = (2根号2)^2*π= 8π

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作者: james8419    时间: 2009-4-25 00:07
正方形边长为4
正方形对角线即圆直径为；4根号2，S圆=(4根号2/2)^2*π=8π，答案有问题

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作者: wanlingH    时间: 2009-4-25 14:21

 OH thank you!!

 跟我想的一樣    我也是覺得答案有問題

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