Question

What is the area of the shaded region

Answer 1

Explanation:

big circle – small circle

big

`\pi * 3.5 {}^(2) = (49)/(4) \pi`

small

`\pi * 1.2 {}^(2) = (36)/(25) \pi`

answer

`(49)/(4) \pi - (36)/(25) \pi = (1081)/(100) \pi`