8. The lel tank on a large truck has trapezoidal cross sections with dimensions (in feet) shown in the gure below. Assume that the engine is approximately 2 feet above the top of the fuel tank and that diesel fuel 1weighs approximately 55.6 pounds per cubic foot. Find the work done by the Jel pump in raising a full tank of fuel to the level of the engine. Hint: Use the fact that dWork = Force x Distance y f