I'm having trouble with problems where you have to find the volume of a solids that are not solids of revolution. Can someone help me with these problems and also tell me a general way of approaching these problems? Thanks 1. The problem statement, all variables and given/known data A hole of radius r is bored through the center of a sphere of radius R > r. Find the volume of the remaining portion of the sphere. 2. The problem statement, all variables and given/known data The base of S (the solid) is an elliptical region with boundary curve [tex]9x^2 + 4y^2 = 36[/tex]. Cross-sections perpendicular to the x-axis are isosceles right triangles with hypotenuse in the base.