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?
~$\frac{5}{12}$~
~$\frac{2}{5}$~
~$\frac{1}{2}$~
~$\frac{3}{4}$~
~$\frac{5}{6}$~
哎这道题好简单都错了,因为得出了≈25/48≠1/2就草率排除了,粗心粗心
登录 或 注册 后可以参加讨论