There is the region bounded by y=ln x, y=0, x=1, and x=e.
I need the volume when this is revolved about y-axis.
This will be a washer...so I have that x=e^y and now I did.....
pi*integral (0 to 1) e^2-e^2y dy
Is this correct?
I put outer radius of e and inner of e^y...would that be correct?