Answer the Ff:

3. MV Thomas Aquinas sank after a collision with a cargo ship last August 23. The coast guards had needed to empty the tank of oil before it will spill in the sea. The tank is spherical in shape of radius 8 feet was half full of oil that weighs 50 pounds per cubic feet. What was the work done by the coast guards to pump oil out through a hole in the top of the tank