Your brother is opening a skateboard shop. He has created a sign for his shop made from 3/8" plywood in the shape shown in the figure. The areal density (= M/A) is 1.12 lb/ft, or 5.47 kg/m = . The curve on the top of the sign is described by the function y = a(x - b), where a = ; and b=3 m. Calculate the moment of inertia of the sign about the y axis. 1.00 m 3/8 in. 3.00 m