Calculus: Volumes of Revolution

Nov 15, 2009 20:18

I am struggling with this problem:

Find the volume of the solid obtained by rotating the region enclosed by the graphs about the given axis: y=16-x, y=3x+12, x=0, about x=2

Since I am rotating about x=2 should I put the equations in terms of x?
Using the washer method how would I know which is the inner and the outer radius?

-Thanks!
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