By definition, the area of a square is given by:
[tex] A = L ^ 2
[/tex]
Where,
L: length of the sides of the square
Substituting values we have:
[tex] 400 = L ^ 2
[/tex]
Clearing the value of L we have:
[tex] L ^ 2 = 400
[/tex]
[tex] L = \sqrt{400} [/tex]
[tex] L = 20 [/tex]
Answer:
The length of each side of the rug is:
[tex] L = 20 [/tex]
