有个题求解

jasmineinsg · 发表于 2013-3-27 22:13:46

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 tabletopcovered by the mat? A. 5/12B. 2/5C. 1/2D. 3/4E. 5/6

请问为什么答案是D？我怎么算都是C啊。求大牛指教。

jasmineinsg · 发表于 2013-3-27 22:22:55

好像不能删，好吧，答案是C，是我看错了答案。。。原谅我。

有个题求解

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