5. Use Stokes' theorem to evaluate: a). Jo (-2y dx + 3x dy + 10z dz), where C is the circle (x - 1)2 + (y - 3)2 = 25, z = 3. b ) . (V x F) . ndS, JS. for F = 6yzi + 5xj + yzer k, where the upwardly oriented surface S is the portion of the paraboloid z = =a 1 2 + 72 for 0