Answer:
45 square centimeters
Explanation:
The shaded region is
of the whole circle. That means, the shaded region is 1 part of 6 parts in the circle.
Shaded region has area of 7.5 square centimeters. This is 1 part.
So, the area of 6 parts would be
square centimeters.
6 parts IS the WHOLE circle, hence, the area of the circle is 45 square centimeters.