Find the volume of the cube and the length of its edge if the surface area is 216² cm.

1. A cube is a three-dimensional figure, each face of which is represented by a square. All edges of a cube are equal to each other.

2. The cube has only 6 faces, which means that the area of one face is 216: 6 = 36 cm2.

3. The area of a cube face is equal to its square edge, which means that the cube edge is equal to the square root of 36, that is, 6 cm.

4. The volume of the cube is equal to the edge raised to the third power, that is, 6 ^ 3 = 216 cm3.