The drag coefficient of a circular cylinder of diameter D normal to flow is ca = (drag per unit length)/qD 1.1 over the Reynolds number range 10 to 105. For Vo = 30 m/s in sea level air, find the diameter of the cylinder with drag per unit length equal to that of both sides of a flat plate of 1-m span and 5-m chord parallel to V. Considering the great difference in the "wetted" area of the two surfaces, how do you account for the great difference in drag/square meter between the cylinder and the flat plate?