A hot surface at $100$C is to be cooled by attaching $3-$cm$-$long, $0\mathrm{.}25-$cmdiameter aluminum pin fins $($k$=237$ W$/$m$.$C$)$ to it$,$ with a center$-$to$-$center distance of $0\mathrm{.}6$ cm$.$ The temperature of the surrounding medium is $30$C$,$ and the heat transfer coefficient on the surfaces is $35$ W$/$ m$2.$C$.$ Determine the rate of heat transfer from the surface for a $1-$m x $1-$m section of the plate. Also determine the overall effectiveness of the fins. Can you answer which fin boundary condition should I use and why?