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Here is a link to the questions:Calculus Disc/washer/shell method.?

I have two problems that I have no idea how to work, and have the test coming up soon.

1) Sketch the region by the following curves and find the volume of the solid generated by revolving this region about the x-axis.

y=8sqrtx

y=8x^3

2) Sketch the region bounded by the following curves and find the volume of the solid generated by the revolving this region about the y-axis.

x=1/2y^3

x=4

y=0

I need to know why you picked the method you did, and the work shown associated with it. THANK YOU SO MUCH

Calculus Disc/washer/shell method.? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.