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标题: Prep-93题 [打印本页]

作者: kevinsee    时间: 2010-7-5 15:45     标题: Prep-93题

93.    10285-!-item-!-187;#058&007154

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
上题不会插图,就是圆里面有个内切正方形,答案是C
这题我的思路是:正方形面积是16,边长是4,那对角线是直径算出来是4倍根号2,半径是2倍根号2,那圆的面积是8π,可竟然没有这个答案




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