# VOLUME TO GALLONS

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### VOLUME TO GALLONS

CAN SOMEONE TELL ME HOW MANY GALLONS ARE IN A FUEL TANK WHO'S DIMENSIONS ARE 76" ROUND & 60" LONG[/b]
LEE

LEE wrote:CAN SOMEONE TELL ME HOW MANY GALLONS ARE IN A FUEL TANK WHO'S DIMENSIONS ARE 76" ROUND & 60" LONG[/b]

I'm assuming this fuel tank is a standard, round cylinder and the "76" round" is the circumference, not the diameter. You don't state if the dimensions are outside or inside dimensions. If these are outside dimensions, youâ€™ll need to subtract the wall thicknesses, then recalculate using the formula PI*r^2*length below.

First, determine the radius of the circular cross-section from the circumference, using the formula: circumference / PI / 2.
76" / 3.1415927 / 2 = 12.1"

The formula for the volume of a cylinder is: PI*r^2*length.
PI * 12.1 squared * 60â€ť,
3.1415927 * 146.41 * 60â€ť = 27,597.64 in^3 (cubic inches)

As there are 231 in^3 in 1 US Gallon, divide the above by 231 in^3.
27,597.64 in^3 / 231 in^3 = 119.47 gallon capacity. Round to 119 gallons
Dirtman
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