A circumferential fin of cross section, 3.7 cm-OD and 0.3 cm-thick surrounds a 2.5 cm-diameter tube. The fin is constructed of mild steel. Air blowing over the fin produces a heat transfer coefficient of 28.4 W/(m2.K). If the temperature of the fin and the air are 260°C and 38°C, respectively, calculate the heat transfer rate from the fin.