1. The problem statement, all variables and given/known data Determine the total force the water exerts on a cylindrical bent dam, with radius 250m and the opening angle of 50 degrees. The deep of the water is 70m 2. Relevant equations 3. The attempt at a solution F = pcA (1) Fx = ρgζcxAx (2) ζp´ = ζc´ + Ic/(ζc´ * A) (3) ζp' = ζ (4) ζcx = hc (5) I got Ic = r*sinα/α (6) from physics handbook I'm not sure if A = h∏r^2 is correct or if hc = a/2 is correct (a is the height) Is this right ? or is something missing ?