http://calc3.askbot.com/questions/Open source question and answer forum written in Python and DjangoenCopyright Askbot, 2010-2011.Wed, 23 Jul 2014 12:18:56 -0500http://calc3.askbot.com/question/152/mass-of-region-between-two-graphs/I'm having problems with #5 on the homework for Spherical and Cylindrical Problems: "Figure 1 shows a 3D domain stuck between $z=x^2+y^2$ and $z=8-(x^2+y^2)$. Find the mass of the corresponding object." so far all I have come up with is $$\int\int\int_{r^2}^{8-r^2} (r^2) dzrdrd\Theta$$ Am I on the right track at least? If so, how do I find the domain of r and $\Theta$?AnonymousWed, 23 Jul 2014 12:18:56 -0500http://calc3.askbot.com/question/152/