Question

In the given figure, AB and CD are two diameters of a circle (with centre O) perpendicular to each other and OD is the diameter of the smaller circle. If OA = 7 cm, find the area of the shaded region.

Answer 1

Radius (r₁) of larger circle = 7 cm

Radius (r₂) of smaller circle

Area of smaller circle

Area of semi-circle AECFB of larger circle

Area of

Area of the shaded region

= Area of smaller circle + Area of semi-circle AECFB − Area of ΔABC