Charge enclosed in cylinder question

[PassThePi]

Homework Statement

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.

Homework Equations

Qtot = int(int(D*ds)) = int(int(int(rho*dv)))
D = epsilon*E

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.

 

[rude man]

The direction of the E fierld is not given, making it impossible to answer the problem.