A circular cylinder of height 1.20 m having faces of diameter 0.620 m is immersed in water?

A circular cylinder of height 1.20 m having faces of diameter 0.620 m is immersed in water of density 1.00 � 103 kg/m^3 with its faces parallel to the surface of the water. The upper face is 2.50 m below the surface of the water. The net force on this cylinder is observed to be 1120 N downward. Atmospheric pressure is 1.01 � 10^5 Pa. What is the net force that the water exerts on the lower face of the cylinder?