This is for SAT prep :(

Semicircular arcs AB,AC,BD,CD divide the circle above into regions.

The points show along the diameter AD divide it into 6 equal parts. If AD=6, what is the total area of the shaded regions?
a.4pi
b.5pi
c.6pi
d.12pi
e.24pi

Here is a picture:
i54 . tinypic . com/25tiwib. jpg

remove the spaces

Thanks!

1 answer

6pi