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!

Homework Help: Volume enclosed by a torus

  1. Aug 9, 2012 #1
    A torus is generated by rotating the circle x2[/SUP+(y-R)2=r2

    Find the volume enclosed by the torus.

    Well, I don't know what to do! I thought that rewritting it as


    would help, but im not sure.


    PD: Is this solid revolutions? because I forgot how to do it...(any refresher????)
  2. jcsd
  3. Aug 9, 2012 #2
    For integration parallel with axis of rotation...

    [itex]\Pi \int^b_a [f(x)]^2[/itex]

    for integration perpendicular to axis of rotation...

    [itex]2\Pi \int^b_a xf(x)[/itex]
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook