290. A tank with internal dimensions of 40 feet X 20 feet X 12 feet is pressed with fuel oil weighing 54 pounds per cubic foot. What is the weight, in short tons, of the liquid?

The tank's volume is calculated by multiplying its dimensions (40 ft x 20 ft x 12 ft), then multiplied by the oil's density (54 lb/ft3) to determine the total weight in pounds, which is then converted to short tons (2,000 lb/short ton), resulting in a weight of 259.2 short tons.