questions below:

Use a parametrization to express the area of the surface as a double integral. Then evaluate the integral. The portion of the cone z =5vx-+ y between the planes z = 15 and z = 20 Let u = r and v =0 and use cylindrical coordinates to parametrization up the double integral to find the surface area. (Type exact answers.) After evaluating the double integral, the surface area is (Type an exact answer, using it and radicals as needed.)Find the area of the surface cut from the paraboloid x2 + y2 + z = 0 by the plane 2 = - 12. E) The surface area is D. (Type an exact answer in terms of 11:.)