Question

如图，扇形的圆心角∠AOB=60°，AD=3cm，弧CD的长为3πcm，则图中阴影部分的面积为

1. A.
   πcm²
2. B.
   πcm²
3. C.
   πcm²
4. D.
   12πcm²

Answer 1

C
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