The edge of a brick in the form of a cube is equal to x cm, Write down as an expression the area of one surface of a brick.

You are given a cube whose edge is x cm. The surface area of a cube is the sum of the areas of its faces. The faces of a cube are squares. The area of one square S_kv = x ^ 2, all the faces are the same and the cube has 6. So the area of the entire surface of the cube can be written as a product of S_surface.cube = 6 * x ^ 2.
Answer: S_kv = x ^ 2, S_surface cube = 6 * x ^ 2.