In the diagram, circles C_1 and C_2 each have center O. The area of the shaded region is
Answer Choices
A. 2\pi
B. 3\pi
C. 4\pi
D. 6\pi
E. 8\pi
In the diagram, circles C_1 and C_2 each have center O. The area of the shaded region is
Answer Choices
A. 2\pi
B. 3\pi
C. 4\pi
D. 6\pi
E. 8\pi