A 3 cm diameter bar 3 m long is attached to two walls on either end of the bar. The walls are at a temperature of 100 degrees C. The thermal conductivity of the bar is 150 W/mK. The outside of the bar is exposed to air at 32 degrees C. The film coefficient between the bar surface and the ambient air is 7.5 W/m^2K. Using a node spacing of 0.5 m, estimate the steady state temperature at the middle of the bar.