Disk Method

Question

Use the disk method or the shell method to find the volume of the solid generated by revolving the region bounded by the graphs of the equations about each given line.

y=x^2,

y=0,

x=3

Answer 1

Posting this for student Lynn C.

Take a look here:

desmos.com/calculator/rh5trvqe2v

For shell method a typical shell is parallel to the axis of revolution.

For disk method a typical radius is perpendicular to the axis of revolution.