Question 186816
Radius r = d/2 = 2/2 = 1 ft and height h = 4ft
Volume of a cylinder = pi r^2h = 3.14 x 1 x 1 x 4 = 12.56 cubic feet 
= 12.56 x 7.5 gallons = 94.2 gallons

So it can hold 94.2 gallons of water


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