2. 职称英语
  3. In the figure at the right, the legs of fight triangle ACB are diameters of the

In the figure at the right, the legs of fight triangle ACB are diameters of the

游客2024-01-12  9
问题 In the figure at the right, the legs of fight triangle ACB are diameters of the two semicircles. If AB = 4, what is the sum of the areas of the semicircles?
选项 A、π
B、2π
C、4π
D、8π
E、16π
答案 B
解析
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