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The semicircle below has diameter $20$. Find the area of the blue region.
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The semicircle below has diameter $20$. Find the area of the blue region.

The semicircle below has diameter $20$. Find the area of the blue region.-example-1
User WASasquatch
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We subtract the area of the triangle from the area of the semicircle
The semicircle below has diameter $20$. Find the area of the blue region.-example-1
User GeorgeQ
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