The perimeter of the square is 28 + 12x.
Given that,
Each side of the square is (7 + 3x).
We know that,
The perimeter of the square is
= 4 × sides
= 4 × (7 + 3x)
= 28 + 12x
In the square, all four sides are equal to each other.
Therefore we can conclude that The perimeter of the square is 28 + 12x.
Learn more about the square here: brainly.com/question/21394374
