This worksheet will help you to know about Barrel Volume Calculation. It is used to find out find out How much liters or Gallons a Barrel will accommodate for the given Barrel size. Barrels are mostly used for oil storage. It has two different radius one at top & bottom and other at the middle. The formula used to calculate volume of the barrels is,
**Formula**

Barrel Volume = (1/12) π h (2 D^{2} + d^{2})

**For Example**

Find the volume of barrel whose top & bottom radius is 5, middle radius is 7 & height is 9.

Barrel Volume = (1/12) π h (2 D^{2} + d^{2})

= (1/12) x 3.14 x 9 x (2 x 72 + 52)

= 289.9286

The final result is in inches. To convert it into Gallon multiple value by 0.004328993

289.9286 inches = 289.9286 x 0.004328993

=**1.2550988798998 Gallon**

To convert into liter multiply the gallon by 3.78541178

1.2550988798998 Gallon = 1.2550988798998 x 3.78541178

=**4.7511 Liter**

When its come to online calculation this Barrel Volume Calculator is an essential tool.

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