In the hydraulic system shown, the piston on the left has a diameter of 4.40 cm and a mass of 1.80 kg. The piston on the right has a diameter of 12.0 cm and a mass of 3.20 kg. If the density of the fluid is 750 kg/m3, what is the height difference h between the two pistons? Give your answer in meters. (Specify the numerical answer only; don't enter the units.)