if the area of a square is 9, then the perimeter of a square is

the answer is 2.25

Area of a square = side^2 .....so...

9 = s^2 take the square root of both sides

3 = s

Perimeter of a square = 4s

So the perimeter is....

4(3) = 12

if y=3x and 4x - 2y =5 , then x= ?