Annie is making square shaped flags to cheer on the swim team. the length of the side of the square is given by the expression 2x + 4. which of the following gives an expression for the perimeter of the square? 4x + 8 2x + 16 8x +16 4x + 16 if x has a value of 5, what is the perimeter of the square? the perimeter is units. if x has a value of 3, what is the area of the square? show all of your steps. previous powered by linkit!