If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage / profrobbob I introduce finding the volume of revolutions using the Shell Method and through 3 examples compared it to the Disk and Washer Method. NOTE: There is a copy error at minute 24:00, 192/5 pi is not equal to 4632.47!!! EXAMPLES at 10:36 15:17 20:12 24:20 28:30 Find free review test, useful notes and more at http://www.mathplane.com If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage / profrobbob