Resposta :
[tex]A = l {}^{2} \\ 144 = l {}^{2} \\ l {}^{2} = 144 \\ l = \sqrt{144} \\ \boxed{\boxed{\boxed{l = 12 \: cm}}} \\ [/tex]
att. yrz
[tex]A = l {}^{2} \\ 144 = l {}^{2} \\ l {}^{2} = 144 \\ l = \sqrt{144} \\ \boxed{\boxed{\boxed{l = 12 \: cm}}} \\ [/tex]
att. yrz