A tank is filled with gasoline to a depth of exactly 2 feet. The tank is a cylinder resting horizontally on its side, with its circular ends oriented vertically. The inside of the tank is exactly 6 feet long. What is the volume of the gasoline in the tank?
(1) The inside of the tank is exactly 4 feet in diameter.
(2) The top surface of the gasoline forms a rectangle that has an area of 24 square feet.