Find the area of the shaded region of the circle. explain : )

Area of shaded part = area of circle - area of the square
 = pi (6)^2  - area of the square.

Area of square = (m of one side) ^2
measure of of side is found as follows:-
6^2  =  2s^2    where   m of the side = 2s
s = sqrt 18   so side of square = 2 sqrt18
area of square = (2 sqrt18)^2 = 4*18 = 72

area of shaded region = 36pi - 72  =  41.1 sq units  to neraest tenth