1. The problem statement, all variables and given/known data So my question is: what is the volume of the region R between the paraboloid 4-x^2-y^2 and the xy-plane? 2. Relevant equations I know how to solve it, it is a triple integral, but how do you find the limits of integration? 3. The attempt at a solution Do I set x=0, or y=0 to find the limits of integration of the triple integral to find the volume ? or? I'm completely lost.