ABCD is a rectangle with AD=10. If the shaded area is 100, then the shortest distance between the semicircles is
Answer Choices
A. 2.5\pi
B. 5\pi
C. \pi
D. 2.5\pi+5
E. 2.5\pi-2.5
ABCD is a rectangle with AD=10. If the shaded area is 100, then the shortest distance between the semicircles is
Answer Choices
A. 2.5\pi
B. 5\pi
C. \pi
D. 2.5\pi+5
E. 2.5\pi-2.5