I have a couple integrals I am having trouble setting up. I would greatly appreciate any help setting these up, I'll be able to solve them no problem.

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1.) "Find the volume of the solid in the first octant bounded byx+y+z=1andx+y+2z=1."

2.) "Evaluate the triple integral off(x,y,z) = z(x"^{2}+y^{2}+z^{2})^{-3/2 }over the part of the ball x^{2}+y^{2}+z^{2}<16 with z>2.

Thanks again for looking!