Given that the perimeter of the square is 48 cm.
We need to determine the length of one side of the square.
Length of the square:
The length of one side of the square can be determined using the perimeter formula.
The formula is given by,
[tex]P=4a[/tex]
Substituting [tex]P=48[/tex] in the above formula, we get;
[tex]48=4a[/tex]
Dividing both sides of the equation by 4, we have;
[tex]12=a[/tex]
Thus, the value of a is 12 cm.
Hence, the length of the one side of the square is 12 cm.