Two cylindrical aluminum spines, having equal length and equal outside diameter are attached to a…

Two cylindrical aluminum spines, having equal length and
equal outside diameter are attached to a hot wall. One of the spines is made of
a solid rod and the other is a pipe. Compare the rate of heat loss from these
otherwise identical fins. The outside diameter is 5 cm and the pipe inside
diameter is 4 cm. The wall is at 300 C and the ambient temperature and heat
transfer coefficient are 35 C and 15 W/m2 ┬ĚK, respectively. Assume
the same heat transfer coefficient for the inside of the pipe.