At steady state, air at 92 kPa, 58C and a mass flow rate of 0.66 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. At the duct exit, the pressure of the air is 92 kPa, the velocity is 178 m/s, and the cross-sectional area is 3.09 10-3 m. Assuming the ideal gas model, determine the temperature of the air at the exit, in C.