This is the problem I have to solve. I keep getting an error message though and can't figure out what's wrong with it.
Find the volume of revolving the area of the circle(x-6)^2 +(y-7)^2 =5 about the x-axis.
function [ z ] = circle( R, r )
z= pi(R.)^2 -pi(r.)^2
Any help would be great! Thanks