A cube has six sides of equal size. The area of side is the length times (x) the width.A 9 meter side is 9 x 9 or 81 square meters. For all six sides of the 9m cube would be 81 square meters x 6, or 486 square meters.
a cube has all lengths/sides to be equal. it also has six faces. The surface area of any any of the faces is given by L². For all six faces, the cube will have a total surface area of 6L²
