For a PWR solid cylindrical UO2 fuel pellet of diameter 10.0 mm operating at a surface heat flux equal to 1.7 MW/m² and a surface temperature of 400°C, calculate the maximum temperature in the pellet for two assumed values of fuel thermal conductivities. The volumetric heat rate in the fuel pellet is uniform throughout the pellet. (a) k=3 W/m-°C independent of temperature (b) k=1+3exp(-0.0005T) where T is in °C