What is the surface area of a 7cm cube?

2 Answers
Jun 24, 2018

294 square centimeters

Explanation:

We know that a cube has 6 faces of equal area. What will the area of one face be?

In a cube, the length and width are the same, so both sides will be 7 cm, yielding an area of 49 square centimeters.

This is the area of one side, so to find the surface area, we multiply this by the number of sides (6). We get

49 cm^2*6=294\ cm^2

The surface area of a 7 cm cube will be 294\ cm^2.

Hope this helps!

294\ cm^2

Explanation:

A cube has 6 identical square faces & the surface area of a cube having each side a=7cm

=6(\text{area of square with side } a)

=6a^2

=6\cdot 7^2

=294\ cm^2