Answer:
The length of an edge of a Rubik's cube is 5.55 cm .
Step-by-step explanation:
As given
The perimeter of each face of a Rubik's cube is 22.2 centimeters.
As in the cube all the sides are of equal length .
Perimeter represented the sum of all sides.
As each face of the cube is consist of 4 sides .
Thus

Putting the value in the above

= 5.55 cm
Therefore the length of an edge of a Rubik's cube is 5.55 cm .