How do you find a surface area of a cube?

Answer 1

6a^2

a = side lengths

let a=2 units, each side area of cube = 2 units^2 (4 sq. units), total sides = 6, total area = 6 x 4 sq. units (24 sq. units).

Answer 2

A cube has six surface areas, all of which are squares of the same size, so you just take the area of one of those squares and multiply the result by 6.