4 11. the area of the surface of the part of y +z =x cut-off by the cylinder x-y = af and the planes y = b, y =-b, is (a) v2ab (b) 8/2ab (c) ab (d) 0

4 11. The area of the surface of the part of y +z =x cut-off by the cylinder x-y = af and the planes y = b, y =-b, is (a) v2ab (b) 8/2ab (C) ab (d) 0 DRAW THIS EQUATION