From Calculus 1:
A ball of radius 13 has a round hole of radius 7 drilled through its center. Find the volume of the resulting solid.
Okay, I have no idea what I am doing wrong here:
General plan is to find the volume of the ball and then subtract the volume of the part drilled out.
The volume of the ball:
V = 4/3pi(13^3) = 9202.77208
volume of the part drilled:
V = Hpi(7^2) = 26 * pi * 49 = 4002.389041
So I get a final answer of about :
But it's the wrong answer. Help??