You can put this solution on YOUR website! IF THE AREA OF A SQUARE GARDEN UIS 50M^2 THEN:
X^2=50
X=SQRT50
X=7.07 METERS IS THE SIDES OF THE SQUARE GARDEN.
THE DIAGIONAL (HYPOTENUSE) OF A RIGHT TRIANGLE IS A^2=B^2=C^2
7.07^2+7.07^2=H^2
50+50=H^2
100H^2
H=SQRT100
H=10 WHICH IS THE LENGTH OF THE DIAGONAL OF THIS GARDEN.