Question

find the area of shaded portion ​

Answer 1

area of shared portion= area of circle with diameter = 20 cm - area of circle with diameter = 8 cm

$= \pi {(r1)}^{2} - \pi {(r2)}^{2} \\ = \frac{22}{7} \times \frac{20}{2} \times \frac{20}{2} - \frac{22}{7} \times \frac{8}{2} \times \frac{8}{2} \\ = 314.28 - 50.28 \\ = 264$

approx.

sorry ,if it's wrong