The answer would be 16 feet As a square has 4 sides that are equal to one another. So all sides equal 4 feet each Perimeter is the outside border so add 4+4+4+4=16 feet I hope this helps!
Since a square has 4 sides, and each side is 4 feet, if you just multiply the amount of sides the square has by the distance being 4 feet, you get 16 feet which is your answer.
