Evaluate the surface integral I f(x,y,z) d'S using a parametric description of the surface. S f (x,y,z) = x2 + y2, where S is the hemisphere x2 + yz + z= 16, for z2 0 .. . Write a parametric description of the given hemisphere using u = Q and v = 0. r(u, v) = where O Sus and SVS (Type exact answers.) The value of the surface integral is (Type an exact answer.)