A 4-mm-diameter and 10-cm-long aluminum tin (k = 237 W/m · °C) is attached to a surface. I...

A 4-mm-diameter and 10-cm-long aluminum tin (k = 237 W/m · °C) is attached to a surface. If the heat transfer coefficient is 12 W/m2 · °C. determine the percent error in the rate of heat transfer from the fin when the infinitely long tin assumption is used instead of the adiabatic fin tip assumption.