1. Not finding help here? Sign up for a free 30min 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!

Area of a surface of revolution around the x-axis

  1. Sep 22, 2009 #1
    Can the Surface area of a revolution be NEGATIVE? I am calculating this in parametric equations?

    finally I hope this is the right forum to ask this question.
     
  2. jcsd
  3. Sep 22, 2009 #2

    sylas

    User Avatar
    Science Advisor

    Yes.

    It is quite common for negative areas to show up in some context when you distinguish the inside and the outside of a surface. Depending on how you set up the formulae, you may have a case like this. Depending on what you are trying to find, you may need to alter the formula.

    Cheers -- sylas
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook