In the figure given below, a circle is inscribed inside another circle. The radius of the outer circle is 12 cm and that of the inner circle is 7 cm. Find the area of the shaded portion between the circles.

 

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Given,

Radius of the outer circle = 12 cm

So, area of the outer circle = r2

= 3.14 x 122

= 452.16 cm2

Radius of the inner circle = 7 cm

Area of the inner circle = r2

= x 72 = 154 cm2

Thus, the required area of the shaded portion

= Area of the outer circle - Area of the inner circle

= 452.16 - 154

= 298.16 cm2

Answered by  | 4th Jun, 2014, 03:23: PM