Can you help me explain how i can get:
R=Big cylinder
r=small cylinder inside
V=pi*R^2*H-pi*r^2*H
to become
pi=[The Answer]
My answer is here ......http://web2.0calc.com/questions/turn-v-into-pi
[I don't know if this is what you wanted, or not]
See your answer from CPhill below.
