A tank is full of water. Find the work required to empty the tank by pumping

all of the water to the top of the tank. The tank has the shape of a triangular prism,

as shown below. The top of the tank has the shape of a square, and the length of its

side is 4 meters. The tank is placed so that the top is horizontal. The height of the

tank is 10 meters. The two triangular faces of the tank are congruent isosceles triangles

perpendicular to the top. Use the fact that the density of water is 1000 kg/m ^3 and the acceleration of gravity is 9.8 m/s^2