# SOLUTION: I have a cylinder 48" tall & 30" in diameter. How many gallons will it hold?

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 Question 107642: I have a cylinder 48" tall & 30" in diameter. How many gallons will it hold?Answer by jim_thompson5910(28510)   (Show Source): You can put this solution on YOUR website!Remember, if the diameter is 30, then the radius is 15 The volume of a cylinder can be found by the formula Now plug in and V = Edit: Now divide that result by 231 to convert from cubic inches to gallons to get . So the tank can approximately hold 147 gallons (after rounding). Note: 1 gallon = 231 cubic inches.