Formula for surface area of cube?

Answer 1

SA = 6s2 where s is the length of one side of the cube.

Think about it.

You know that s x s gives you the area of one face of a cube.

You also know that a cube has 6 faces.

Therefore the total surface area is:

(s x s) + (s x s) + (s x s) + (s x s) + (s x s) + (s x s)

Or

6 x (s x s)

Or

6s2