# Volume

### From Fiswiki

** Volume** is how much three-dimensional space a substance (

**solid**,

**liquid**,

**gas**, or plasma) or shape occupies, often quantified numerically using the SI derived unit, the cubic metre. The volume of a container is generally understood to be the capacity of the container, i. e. the amount of

**fluid**(gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.

Three dimensional mathematical shapes are also assigned volumes. Volumes of some simple shapes, such as regular, straight-edged, and circular shapes can be easily calculated using arithmetic formulas. The volumes of more complicated shapes can be calculated by integral calculus if a formula exists for the shape's boundary. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space.

The volume of a **solid** (whether regularly or irregularly shaped) can be determined by fluid displacement. Displacement of liquid can also be used to determine the volume of a gas. The combined volume of two substances is usually greater than the volume of one of the substances. However, sometimes one substance dissolves in the other and the combined volume is not additive.

## Also see

**Moisture****Liquid****Ice****Solid****Temperature****Water Cycle****Gas****Density****Snow density****Snow removal****Phase change****Compressors****Partial pressure**

## Reference

- Wikipedia [1]

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