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

游客2024-01-12 28

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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