Problem $4-10$ pts

A $20-cm$ long rod $(k=50\frac{W}{m}K)$ protrudes from a wall. The wall has a base temperature of $200$

$C,$ and the rod is circular with a diameter of $5$ cm $.$ The rod is exposed to a fluid at $40C$ with a

heat transfer coefficient of $25\frac{W}{m^2}K.$

Determine the heat transfer dissipated from the rod $($W$)$

Determine the fin efficiency of the rod $(\%)$