Asquare has a surface area of 24 square meters. what is the area of each face? what is the length of each edge?

Do you mean a cube has a surface area?
If so we identify by how many faces a cube has which is 6. That would mean to find the surface area we add each squares area to get 24. So we divide 24 and 6 to get the area of each face.

24 / 6 = 4 m^2

We know that a square has equal side lengths thus finding that A = a^2. We find the square root of 4 to get the length of each square.

sqrt 4 = 2 m