1. The problem statement, all variables and given/known data The electric field inside a circular cylinder of radius r = a and height z = h is given by: E = Az[(-c/h)+(b/6(epislon zero)*(3z^2 - h^2) where c and b are constants. Assuming the medium within the cylinder is free-space, find the total charge enclosed within the cylinder. 2. Relevant equations Qtot = int(int(D*ds)) = int(int(int(rho*dv))) D = epsilon*E 3. The attempt at a solution Surface integral of each side (1-top, 2-side, 3- bottom) 1 & 3 = 0 2 = h*pi*r^3 not sure what to do from here? ***Nevermind, I figured it out I think. I'll post the solution if anybody wants it.