A wire of length 15 is cut into two pieces which are then bent into the shape of a circle of radius r and a square of side s. Then the total area enclosed by the circle and square is the following function of s and r TC7 2 + 5 2 If we solve for s in terms of r, we can reexpress this area as the following function of r alone: 15 Thus we find that to obtain maximal area we should let r = To obtain minimal area we should let r = 1.05