**Definitions:**

**Imperial Gallon** (abbreviations: **imp. gal, or imp gal**): is a unit of measurement for liquid capacity in the British imperial systems of measurement. Three significantly different sizes are in current use: the imperial gallon defined as 4.54609 litres, which is used in the United Kingdom, Canada, and some Caribbean nations; the US gallon defined as 231 cubic inches (3.785 L), which is used in the US and some Latin American and Caribbean countries; and the least-used US dry gallon defined as 1/8 US bushel (4.405 L).

**Millimeter Cube** (abbreviation: **mm3**): is the SI derived unit of volume. It is the volume of a cube with edges one millimeter in length.

## How to Convert Imperial Gallons to Millimeters Cube

*Example: How many millimeters cube are equivalent to 77.85 imperial gallons?*

As;

1 imperial gallons = 4545000 millimeters cube

77.85 imperial gallons = Y millimeters cube

Assuming Y is the answer, and by criss-cross principle;

Y equals 77.85 times 4545000 over 1

(i.e.) Y = 77.85 * 4545000 / 1 = 353828250 millimeters cube

Answer is: 353828250 millimeters cube are equivalent to 77.85 imperial gallons.

*Practice Question: Convert the following units into mm3:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 68.79 imp. gal

( ii ) 8.61 imp. gal

( iii ) 38.04 imp. gal