Volume - GCSE Maths Definition

In this sense, volume is the amount of space that a three-dimensional object occupies, or contains. (It is not to do with sound/loudness!).
Volume is measured in cubes; the volume of an object is the number of cubes (of a particular size) that can fit inside, or are currently inside, an object. Cubic units are used to describe volume, such as cubic centimetres (cm³) or cubic metres (m³). When volume is referring to liquids or gas, the term capacity is often, but not always, used and units may be millilitres (ml) or litres (l).

Capacity can be used to refer to the maximum volume a container can hold, whilst volume may be referring to the volume a container currently holds ; for example, the capacity of a car's fuel tank, as opposed to the volume of fuel currently in it.

In GCSE Mathematics, you may be required to find the volume of common three-dimensional shapes, such as cuboids, cylinders and prisms. Using volume is surprisingly common - when was the last time you needed to find a "container" (box, bag or case?) to hold a particular item or items (clothes, sports gear, school equipment?)?