Question

Two coins of diameter 2cm and 4cm respectively are kept one over other Shown in fog find area of shaded region ring shaped sq

Answer 1

To get the area of the shaded area, we must get the area of the larger coin and the area of the smaller coin then we get their differences.

Area of small coin:3.142×1×1=3.142cm2

Area of larger coin=3.142×2×2=12.568cm2

Difference :12.568-3.142=9.426

9.426cm2