Measurement and Geometry
Volume is a measurement of the amount of space taken up by a three-dimensional object. Volume is one of the measurements we use frequently. When we talk about the size of a motor in cubic centimetres or buy a truckload of mulch for the garden in cubic metres, we are using volume.
Closely related to volume is the idea of capacity. The capacity of a container is how much liquid or gas the container can hold.
In Australia, we use the metric system of measurement. We buy milk in litres and take doses of medicine in millilitres. The capacity of a swimming pool is measured in megalitres.