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标题: gwd 10-7 [打印本页]

作者: xirui2000    时间: 2005-9-27 13:19     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: asasasas1    时间: 2005-9-28 06:09

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: xirui2000    时间: 2005-10-2 07:57

I see!!  谢谢楼主!!!




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