Definition 7.19
 And a cube is equal multiplied by equal and again by equal, or a number which is contained by three equal numbers.
And a cube is equal multiplied by equal and again by equal, or a number which is contained by three equal numbers.
 And a cube is equal multiplied by equal and again by equal, or a number which is contained by three equal numbers.
And a cube is equal multiplied by equal and again by equal, or a number which is contained by three equal numbers.