In figure, ABC is a right angled triangle, right angled at A. Semicircles are drawn on AB, AC and BC as diameters. Find the area of the shaded region.
Please see the figure:http://puu.sh/2e9qw
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https://www.meritnation.com/ask-answer/question/at-a-semi-circles-are-drawn-on-ab-ac-and-bc-as-diam/areas-related-to-circles/3935571