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标题: gwd 10-7 [打印本页]

作者: XIAOHUANHUAN 时间: 2008-8-25 19:52 标题: gwd 10-7

Q7:
A circular mat with diameter 20 inches is placed on a square tabletop, each of whose
sides is 24 inches long. Which of the following is closest to the fraction of the tabletop
covered by the mat?

A. 5/12
B. 2/5
C. 1/2
D. 3/4
E. 5/6

作者: catkittycats 时间: 2008-8-26 07:07

直径20的圆和边长24的正方形的面积之比

100PI:24*24=314:576=0.545

那么1/2即C最接近~

答案C

作者: XIAOHUANHUAN 时间: 2008-8-27 19:15

明白了。谢谢！！！！！！！

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