Can these please be answered on paper with a step by step explanation

15.) Use Stokes' Theorem to evaluate J F . dr, where C is oriented counterclockwise as viewed from above. F(x, y,z) = yz i + 2xz j + exy k, C is the circle x2 + y2 = 16, z = 5 16.) Use the Divergence Theorem to calculate the surface integral SJ, F . ds. [That is, calculate the flux of F across S. ] where F(x, y, z) = xyeli + xy2z3j - yezk, and S is the surface of the box bounded by the coordinate planes and the planes x = 3, y = 2, and z = 1