An aluminum pan whose thermal conductivity 237 W/m∙K has a flat bottom with diameter 15 cm...

An aluminum pan whose thermal conductivity 237 W/m∙K has a flat bottom with diameter 15 cm and thickness 0.4 cm. Heat is transferred steadily to boiling water in the pan through its bottom at a rate of 1400 W. If the inner surface of the bottom of the pan is at I05°C, determine the temperature of the outer surface of the bottom of the pan.