Coeficiente de Dilatação Superficial = beta
beta = 2 alpha
beta = 2 * 12*10^-6°C^-1
1200cm² = 12m²
/\S = So * beta * /\T
/\S = 12 * 24 * 10^-6 * 60
/\S = 17.280 * 10^-6
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/\S = 0,01728 m² = 1,728cm² de variação
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