Heat is generated at the rate of 35 MW/m³ in a solid square rod. Each side of the rod measures 6 cm and the length of the rod is 1.5 m. The rod is exposed to a convection environment at 25 °C. The heat transfer coefficient is 3820 W/m²-°C. Calculate the surface temperature of the rod (°C). Ans. 162.4 °C