[tex]l = 3 \: m[/tex]
[tex]A = {l}^{2} = {3}^{2} = 9 \: {m}^{2} [/tex]
[tex]l = 4.8 \: m[/tex]
[tex]A = {l}^{2} = {4.8}^{2} = 23.04 \: {m}^{2} [/tex]
[tex]l = 28 \: dm = 2.8 \: m[/tex]
[tex]A = {l}^{2} = {2.8}^{2} = 7.84 \: {m}^{2} [/tex]
[tex]l = 3.4 \: dm = 0.34 \: m[/tex]
[tex]A = {l}^{2} = {0.34}^{2} = 0.1156 \: {m}^{2} [/tex]
[tex]l = 57 \: cm = 0.57 \: m[/tex]
[tex]A = {l}^{2} = {0.57}^{2} = 0.3249 \: {m}^{2} [/tex]
