Răspuns :
[tex]\it \mathcal{A}=\ell^2=36=6^2\ \Rightarrow\ \ell=6\ cm\\ \\ diagonala=\ell\sqrt2=6\sqrt2\ cm[/tex]
A patrat=36cm²
l²=36cm²
l=6cm
d patrat=l√2
d patrat=6√2cm
[tex]\it \mathcal{A}=\ell^2=36=6^2\ \Rightarrow\ \ell=6\ cm\\ \\ diagonala=\ell\sqrt2=6\sqrt2\ cm[/tex]
A patrat=36cm²
l²=36cm²
l=6cm
d patrat=l√2
d patrat=6√2cm