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CBSE Class 8 Answered

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 | 04 Jun, 2014, 01:23: PM
answered-by-expert 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 | 04 Jun, 2014, 03:23: PM

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