Please help me with this homework. thanks

1. Suppose that D is the region bounded by the paraboloid a - y2 + 2? and the plane x + 4z - 4. Set up, but do not compute, a triple integral that gives the volume of D. 2. Set up triple integrals in cylindrical coordinates that compute the volumes of the following regions (do not evaluate the integrals): a) the region A bounded by the sphere z? | y? | 2 - 12 and the paraboloid 12 + y- + z - 0, b) the region B in the first octant bounded by the surfaces z - 12 and 2 + y + z = 1, and c) the region C inside both spheres ~? I g? + (z -2)2 - 16 and a2 + y? + 22 - 16