The Giant Ocean Tank at the New England Aquarium is a cylinder that is 23 feet deep and 40 feet in diameter?

a. Find the volume of the tank.

b. How many gallons of water are needed to fill the tank (1 cubic foot = 7.5 gallons)The Giant Ocean Tank at the New England Aquarium is a cylinder that is 23 feet deep and 40 feet in diameter?
a. The volume of a cylinder is pi r^2 h



where r is the radius (= half of the diameter) and h is the height



So volume of tank = pi (20^2) 23



= 28,903 cubic feet (approx.)



b. Water needed to fill tank =



28,903 cubic feet x 7.5 gallons/cubic foot



= 216,770 gallons (approx.)