Cube number — lesson. Mathematics State Board, Class 8.

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Do you ever heard the word cube before?

Yes, we know that a cube is a

$3$ -dimensional figure; we already studied it in earlier classes.

Recall:

A cube is a solid figure, which has all sides of equal length.

If you multiply a number by itself and then by itself again (thrice), the product is a cube number. It is also called as a perfect cube. That is, if

$a$ is a number, its cube is represented by

$a^3$ .

Example:

Let us find the cube number of

$3$ .

Here,

$a = 3$ .

$a^3 = 3^3$

$= 3 \times 3 \times 3 = 27$

Therefore,

$27$ is the cube number of

$3$ .

The following table consist of cube numbers of the first ten numbers.

Did you find an error?

1. Cube number