[tex]P = 54.36 \: m[/tex]
[tex]P = 2(L + l)[/tex]
[tex]L = 2l[/tex]
[tex]2(2l + l) = 54.36 \: | \div 2[/tex]
[tex]2l + l = 27.18[/tex]
[tex]3l = 27.18 \: | \div 3[/tex]
[tex]l = 9.06 \: m[/tex]
[tex]L = 2l[/tex]
[tex]L = 2 \times 9.06[/tex]
[tex]L = 18.12 \: m[/tex]
[tex]A=L \times l[/tex]
[tex]A=18.12 \times 9.06[/tex]
[tex]A=164.1672 \: {m}^{2} [/tex]