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为了测算如图阴影部分的面积,作一个边为6的正方形将其包含在内,并向正方形内随即投...
为了测算如图阴影部分的面积,作一个边为6的正方形将其包含在内,并向正方形内随即投掷800个点,已知恰有200个点落在阴影部分内,据此,可估计阴影部分的面积是
.
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