A tank 100 ft in diameter and 20 ft tall is filled with crude oil to within 2 ft of the top of
the tank. One accident scenario is that a 6-in-diameter line connected to the bottom of
the tank might break loose from the tank, allowing crude oil to drain out. If a 30-min
emergency response time is required to stop the leak, estimate the maximum amount of
crude oil (in gallons) leaked. The tank is vented to the atmosphere, and the specific gravity
of crude oil is 0.9.