Răspuns :
[tex]P_{patrat}=1 \: m[/tex]
[tex]P_{patrat} = 4l[/tex]
[tex]4l = 1 \: = > l = \frac{1}{4} \: =0.25 \:m[/tex]
[tex]P_{patrat} = 4l[/tex]
[tex]4l = 1 \: = > l = \frac{1}{4} \: =0.25 \:m[/tex]