1. The problem statement, all variables and given/known data A circular cylindrical barrel is half full with oil. If the diameter of the base is 8.0 m, find the net force against each end if ρo = 800 kg/m3. The cylinder is on its side. 2. Relevant equations F=P*A P=ρgdy 3. The attempt at a solution P = ρo*g*h, where h is the radius which is 4 meters. A = half the area of a circle, 1/2πr2 F=ρogh*1/2πr2 The answer is incorrect, what am I doing wrong?