Resposta :
[tex]\Large\boxed{\boxed{\boxed{{Ola\´\ }}}}}[/tex]
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[tex]\sf \frac{\theta c \: - \: 0}{100 \: - \: 0} = \frac{F \: - \: 32}{212 \: - \: 32} \\ \\\sf \frac{\theta c}{100} = \frac{87,8 \: - \: 32}{180} \\ \\ \sf\theta c = \frac{5.(55,8)}{9} \\ \\ \sf\large\boxed{{\sf \large\boxed{{\sf \theta c = 31 {}^{o} C{}}}{}}} \\[/tex]