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Question

In the Figure 6, find the area of the shaded region, if ABCD is a square of side 14 cm and APD and BPC are semicircles.

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Solution

Solution
Area of the shaded region = Area of Square ABCD − (Area of semicircle APD + Area of semicircle BPC)
=(14)2[12π(142)2+12π(142)2]=(14)2227(7)2=42 cm2
=142-12π1422+12π1422=196-154=42 cm2
Hence, the area of the shaded region is 42 cm2.

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