As in the figure,there are four circle with radius of 2．The four circles are apart from each other.Link their centers to form a quadrilateral,then the total area of the shaded parts in the figure is（ ）
【考點】多邊形內角與外角．
【答案】B
【解答】
【點評】
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發布：2024/5/27 14:0:0組卷：61引用：1難度：0.9
