7. Let S be the closed surface consisting of the surface S_{I} of the cone z ^ 2 = x ^ 2 + y ^ 2 for 0 7. Let S be the closed surface consisting of the surface Sl of the cone z2= x2+y2 for 0x2+y216 and the flat cap S2 consisting of the disk at z=3 as shown on the right. The piece-wise smooth surface S is bounded by the piece-wise smooth closed curve C. Let F(x,y,z)= z+x+yk (a) Derive S(curlF)ndA. (b) Derive CF(r)dr