GAUSS8 2010 Problem 24

Two circles each have radius 10\:cm. They overlap so that each contains exactly 25\% of the other’s circumference, as shown. The area of the shaded region is closest to

Image

Answer Choices
A. 57.08\:cm^2
B. 55.24\:cm^2
C. 51.83\:cm^2
D. 54.17\:cm^2
E. 53.21\:cm^2