What is the surface area of a 7cm cube?

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

$49 c {m}^{2} \cdot 6 = 294 \setminus c {m}^{2}$

The surface area of a $7$ cm cube will be $294 \setminus c {m}^{2}$.

Hope this helps!

$294 \setminus c {m}^{2}$

Explanation:

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

$= 6 \left(\setminus \textrm{a r e a o f \square w i t h s i \mathrm{de}} a\right)$

$= 6 {a}^{2}$

$= 6 \setminus \cdot {7}^{2}$

$= 294 \setminus c {m}^{2}$