Answer :

First, we have to calculate the area of each circle.

Area of a circle (A) = π r^2

Where :

r = radius

Big circle area (A1)

A1 = π 27^2 = 2,290.22

Small circle area (A2)

A2= π 20^2 = 1,256.64

A2 is the area of the white region = 1,256.22

To find the area of the blue region subtract A2 to A1

A1-A2 = 2,290.22-1,256.22 = 1,034

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