I don't know, iv found a few different equations for a sphere and not sure which one to believe...or use! one was x^2+y^2+z^2 = r^2
another one used sin(theta)...
using the technique of double integration i need to prove that the volume of a sphere =
4/3*Pi*r^3...i kinda have some idea but don't know what original function to start the double integration on?
Help!
Thank you...