The volume is the amount of space that a substance or object occupies, or that is enclosed within a container.
A cube was probably one of the first toys you were given as a young child to build things with.
It is something you never grow out of.
Even now, when a teacher puts them on your desk at school for an activity, you probably try and make something.
Some things never change.
Think about where you see cubes in the real world.
There are endless examples, but here are just a few: dice, sugar cubes, fudge, Rubik's cube, packages, plant pots etc.
To find out the volume of items such as these we need a formula.
Because a cube is three dimensional, we are looking for three measurements as shown above.
The volume of a cube is length x length x length
sometimes written as base x length x height
Think about what you know already. A cube has square faces.
Squares have sides that are all the same length.
The volume of this cube = 7 x 7 x 7 = 343 cm³
We measure volume in units cubed.
On your calculator, you can do 7 then press x³ button.
Try the activities by putting all three numbers in so that you are 100% confident in what you are doing.
You may not always be allowed a calculator for this type of question.
Warning - An easy mistake is 7 x 3 = 21 cm³ As you can see, this is a totally different answer!