Disregard this post. I have worked it out with the assistance of Paul's online calculus tutorial. Great graphics helped.
The problem is as follows:
What is the volume of the solid of revolution obtained by rotating the region bounded by the curves
x = y 3 − y 4 and x = 0 about the line y = −2?
My question is why would it make any difference to the volume if the solid was revolved around y= -2 as opposed to y= 0 (or any other number for that matter)?