A vertical right circular cylindrical tank measures 26 ft high and 10 ft in diameter. it is full of oil weighing 60 lbs/ft^3. How long will it take a 1/2 horsepower pump, rated at 275 ft x lbs/sec to pump the oil to the level of the top of the tank? Give your answer to the nearest minute!
The time needed to pump out a tank is found.