A soldering iron draws 10W of power. It is in a 28 degree C room, and in steady state has a temperature of 360 degrees C. If the hot part of the iron has an emissivity os 0.3, and is of uniform temperature, what is its area? Assume that all heat is transferred via radiation.

Potential answers to this problem: 11.3 cm² , 12.3 cm² , 22.3cm² , 38.6 cm²