Question: Class is Heat Transfer. Please show all steps and will rate question. For Part a). I got 49.98W but not sure if it is right.

A 1.0 mm thick stainless steel (k = 36 W/mC) circumferential fin of rectangular profile is installed on a tube having a diameter of 2.0 cm. The outer radius of the fin is 4.0 cm. The inner tube is maintained at 250C and the assembly is exposed to a convection environment having To =35 C and h = 50 W/m C. Calculate (a) the heat lost from ONE fin and (15 points) (b) the effective of the fin. (10 points)
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