Solve questions with step by step please

1. (10 points) Use spherical coordinates to compute the surface area of a sphere of radius R (i.e. set up and evaluate a surface integral which represents the area of a sphere of radius R). 2. (10 points) Compute the work done by F = (3y, -2x, 3y) over the circle x2 + y? = 9, z = 2 (oriented counterclockwise) by using Stoke's theorem. 3. (10 points) Compute the flux of F = (zx, yx3, x22) out of the surface which bounds the solid region with boundary given by y = 4 - x2 - 22, y = 0