# Volume of revolution

First, I can't tell the difference between the two. Both seem to indicate a region bounded by two or three certain functions or points.

I was wondering if anyone could give a step by step explanation of how to do

1. Volumes by Cylindrical Shells

2. Volumes by Disks and Washers.

https://brainmass.com/math/integrals/volume-cylindrical-shells-disks-washers-217501

## SOLUTION This solution is **FREE** courtesy of BrainMass!

The solution is attached below in two files. the files are identical in content, only differ in format. The first is in MS Word format, while the other is in Adobe pdf format. Therefore you can choose the format that is most suitable to you.

Due to the limitations of the file media, I strongly encourage you to take a look at the following sites that explain all the methods using may graphs and even animations:

http://mathdemos.gcsu.edu/mathdemos/shellmethod/

http://mathdemos.gcsu.edu/mathdemos/diskmethod/diskmethod.html

http://mathdemos.gcsu.edu/mathdemos/washermethod/.

https://brainmass.com/math/integrals/volume-cylindrical-shells-disks-washers-217501