I need help understanding certain aspects of this problem... Problem statement Write an integral expressing the amoutn of force on one trapezoidal side of this water vessel when the height of the water is H meters. The density of water is 1000 kg/m3, and the force of gravity is 9.8 N/kg. Relevant Equations F = P * A P = ∂water*g*depth Attempt at solution From what I understand, the depth of the water is a height (1-h) from the top of the trapezoidal side. Thus, P = (1000)(9.8)(1-h). Now, I'm trying to solve for the area, and I know h is changing as the depth increases, but I'm unsure on how I can find a precise value. Any help on this one?