Which is 9. So 9 is a square number. Here are some other examples of square numbers. Can you see how all these numbers can be arranged into a square? Which is 64. So 64 is a cube number.

Count the unit cubes that make the top layer of the cube. Multiply the number of cubes in the top layer by the total number of layers it has. To calculate the volume of a cube: Cube the length of ...