Question

What is the surface area of a cube with faces that each have an area of 16 cm2?

Answer 1

The cube have 6 faces.
The area of the one face is equal 16 cm².

Therefore:
Surface area of the cube: S=6 × 16 cm² = 96 cm²

Answer 2

To find out what one side measures you will have to take the square root of the Area. 

$\sqrt{16} =4$

To find out surface area of the cube you use the formula $A=6 a^{2}$, where a = side.

Therefore,
$A=6 (4^{2})$
$A=6 (16)$
$A=96cm^{2}$