Answer :
Given that in the same square garden plot (with an area of 400 sq ft);
[tex]\text{Area A = 400ft}^2=l^2[/tex]The length of the sides of the square garden is;
[tex]\begin{gathered} l^2=400 \\ l=\sqrt[]{400} \\ l=20ft \end{gathered}[/tex]The perimeter of the square field is;
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