[tex]P = 96 \: cm[/tex]
[tex]P = 4l[/tex]
[tex]4l = 96 \: | \div 4[/tex]
[tex]l = 24 \: cm[/tex]
[tex]A = {l}^{2} = {24}^{2} = 576 \: {cm}^{2} [/tex]
[tex]P = 16 \: dm[/tex]
[tex]P = 4l[/tex]
[tex]4l = 16 \: | \div 4[/tex]
[tex]l = 4 \: dm[/tex]
[tex]A = {l}^{2} = {4}^{2} = 16 \: {dm}^{2} [/tex]
[tex]P = 80.4 \: mm[/tex]
[tex]P = 4l[/tex]
[tex]4l = 80.4 \: | \div 4[/tex]
[tex]l = 20.1 \: mm[/tex]
[tex]A = {l}^{2} = {20.1}^{2} = 404.01 \: {mm}^{2} [/tex]
[tex]P = 8.56 \: dm[/tex]
[tex]P = 4l[/tex]
[tex]4l = 8.56 \: | \div 4[/tex]
[tex]l = 2.14 \: dm[/tex]
[tex]A = {l}^{2} = {2.14}^{2} = 4.5796 \: {dm}^{2} [/tex]
