1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Disk Method: Did I do it right?

  1. Oct 10, 2009 #1
    1. The problem statement, all variables and given/known data
    Find the volume of the solid generated by revolving the shaded region about the given axis.

    2. Relevant equations
    I used the disk method to solve this
    V = int from a to b(pi * R(x)^2)

    3. The attempt at a solution

    V = int from 0 to 2( pi * (3Y/2)^2 dy) = 6pi
  2. jcsd
  3. Oct 10, 2009 #2


    Staff: Mentor

    Which axis? It's not given.
  4. Oct 10, 2009 #3
    sorry.... Over the Y axis.
  5. Oct 10, 2009 #4


    Staff: Mentor

    The region is rotated around (or about) the y-axis. Yes, that's the right answer.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Disk Method: Did I do it right?
  1. Did I do it right? (Replies: 1)