The length of one side of the square is x+6
Area of a square
The formula for calculating the area of a square is expressed as:
A = L^2
where
L is the side length of the square
Given the following parameters
A = x^2 + 12x + 36 square feet
A = (x+6)^2
(x+6)^2 = L^2
L = x + 6
Hence the length of one side of the square is x+6
Learn more on area of a square here: https://brainly.com/question/25092270
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