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ryzh [129]
3 years ago
12

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

Biology
1 answer:
malfutka [58]3 years ago
3 0

Answer:

125.6

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

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