The radius of the larger circle is 9cm. The diameter of the smaller circle is 11cm. Find the area of the shaded region

The shaded area is between the larger circle and smaller circle . It is concentric

The area of the larger circle is 81Ï€.
The smaller circle has area 121Ï€/4 = 30.25Ï€
How do I get the area in between now?

1 answer

Shaded area=larger-smaller

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