Resposta :
[tex]\boxed{\boxed{\bf{\red{Olá }}}}[/tex]
Vamos a os cálculos
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[tex]c = 2.\pi.r \\ c = 2.3.20 \\ c = 6.20 \\ \boxed{c = 120 \: m}[/tex]
[tex]\boxed{\boxed{\bf{\red{Olá }}}}[/tex]
[tex]c = 2.\pi.r \\ c = 2.3.20 \\ c = 6.20 \\ \boxed{c = 120 \: m}[/tex]