need help quickly please; will give like for correct solution

14. [18 pts] Let F = 4yi - xzj + sin (y# )k , and S be the portion of the sphere x' + y' + z' = 20 above the plane z = 4 . Use Stoke's Theorem to find (VXF . ndS, where n is the "inward" unit normal on S.Stoke's Theorem Let S be an orientable surface bounded by a piecewise-smooth simple closed curve C. If F is a continuously differentiable vector field on S , then F .Ids = [[ (VxF).nds, where n is the unit normal vector function on S whose direction agrees with the orientation of C according to the right-hand rule