How to Find the Volume of a Cube

Finding the Volume of a Cube

The volume of a cube is found using the formula:

In this formula, a is the length of each side of the cube. The image below shows what we mean by the length of the side:

How to Find the Volume of a Cube

Question

What is the volume of a cube with sides of length 6 cm, as shown below?

Step-by-Step:

1

Start with the formula:

Volume = a3

Don't forget: a3 = a × a × a (a cubed).

2

Substitute the side length into the formula. In our example, a = 6.

Volume = 63 = 6 × 6 × 6 = 216 cm3

Answer:

The volume of the cube with sides of length 6 cm is 216 cm3.

Slider

The slider below shows another real example of how to find the volume of a cube.

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See Also

Finding the volume of a cube ( interactive widget)