Question

A cube has a volume of seven units. what is the edge length of a cube?

Answer 1

`7=a^3`

Given:

The volume of the cube = seven units.

Let a be the edge length of the cube.

Consider the formula for the volume of the cube.

`V=a^3`

Substitute V=7 in the formula, we get

`7=a^3`

Taking cubic root on both sides, we get

`\sqrt[3]{7}=a`
`T\text{he edge length of the given cube is }\sqrt[3]{7}\text{ units.}`

or

`T\text{he edge length of the given cube is }1.91\text{ units.}`