A square has 4 equal sides. So for side L, the perimeter P = 4L.
But we know L^2= 25 square metres
Therefore L = ±5 metres.
As a negative length has no physical meaning we ignore L = -5
We insert the value of L = 5 in the equation P = 4L, and arrive at P = 20 metres.
Why are you trying to make it hard for us?
We don't need algebra to solve this.
If area = 25 sq m. One side = √25 = 5 m length of one side.
Since a square has 4 sides, its perimeter = 4(5) = 20 meters.
permit the fringe of the sq. be x m, so, through fact the section, A, is 25m^2, then: A = x^2, so 25 = x^2, so x = rt25, so x = 5. the fringe is 4x = 4 x 5 = 20 m. in basic terms a small element: "the component to a sq. is 25 squareM, or m^2 metres is a linear length.