In the given figure, ABCD is a square of side 7 cm, DPBA and DQBC are quadrants of circles each of the radius 7 cm. Find the area of shaded region.
Given:
Side of square = 7 cm
Radius of each quadrant = 7 cm
Area of square = side × side = 7 × 7 = 49 cm2
∵ Area of quadrant = 
πr2
∴ Area of 2 quadrants = 2 × 
× πr2
= 
× 
× 7 × 7
= 77 cm2
Area of shaded region = Area of 2 quadrants – Area of square
= 77 – 49 = 28 cm2
Hence, the area of shaded region is 28 cm2.
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