Question

Find the area of shaded portion

Answer 1

A) area of shaded region= area of big circle - area of small circle
= (22/7 × 10.5 × 10.5) - (22/7 × 3.5 × 3.5)
= (22×1.5×10.5) - (22×0.5×3.5)
=346.5 - 38.5
=308 sq cm