A plane wall, with a surface area of 10 m2 and a thickness of 60 cm, exposed to air at 20C. The other surface of the plane wall is exposed to a heat 3200 W. The average heat transfer coefficient at the cold surface of the wall is equal to 16 W/m2.K. Under steady-state conditions, calculate the heat flux and the temperature at the cold surface of the wall. please specify, because the terms cold and hot side are confusing