An aquarium 7\displaystyle {7} m long, 5\displaystyle {5} m wide, and 4\displaystyle {4} m deep is full of water. Find the following:
the hydrostatic pressure on the bottom of the aquarium   Pascals,
the hydrostatic force on the bottom of the aquarium   Pascals,
the hydrostatic force on one end of the aquarium   Pascals.