Find the volume of the solid of revolution generated when the given region of the figure is revolved about the indicated line:

The given is :

lines: x = 4, y = 8

The curve is: y^2 = x^3

Question:

Find the volume of The region below the line y = 8 (meaning inside the parabola) revolving about the line x = 4

I cant hit the answer key and i always end up with 1024/35 pi cubic units ...

the answer is suupposed to be 3456/35 pi cubic units from the answer key

help! and thanks alot!