Question

A circle with radius of 9 cm sits inside a circle with radius of 11 cm.

What is the area of the shaded region?
Round your final answer to the nearest hundredth.

Answer 1

125.6

Step-by-step explanation:

Area of a circle = πr^2

Area of circle 1 = 3.14 × 11 × 11

=379.94cm^2

Area of circle 2= 3.14 × 9 ×9

=254.64cm^2

Area of a shaded region

=379.94cm^2 - 254.64cm^2

=125.60cm^2