geometry
posted by Rich .
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!

6pi