Question

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line.

y=x, y=(sqrt)x; about x=2

Answer 1

I have my work shown here:

http://imgur.com/CE4ea6Y

Answer 2

you have found the volume about x=1.
the part from 1 to 2 is to be integrated

Answer 3

But if it's rotated about the x=2 then that's all empty space?

Answer 4

I didn't draw the solid b/c the 3d part is difficult to draw but I thought it would look like a bowl with no bottom