contestada

the length of each edge of a cube is X centimeter if x is an integer why can't the volume of the cube equal 15 cm squared

Respuesta :

Because cubes feature only certain values:

1^3 = 3

2^3 = 8

3^3 = 27

There is no x, x an integer, for which x^3 is = 15 cm^3.

Note well: the units of volume in this case are cm^3, not cm^2.