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
答案是C,我不太明白,有没有那位大侠帮忙解答一下,谢谢!
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多谢了,明白了。我太笨了,呵呵
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