An engineer wants to build an aquarium with a window in the shape of a trapezoid. Find missing section of equation representing the liquid pressure. Note: density of water = 62.4 Ib/ft^3. Picture an upside down trapezoid. The top measures 20 ft, the bottom measures 10 ft. The top of the trapezoid is 2 ft below the surface of the water. The height of trapezoid is 10 ft. we’re already given 62.4, (0,10) and (12-y).