A fire wall separates two rooms. In one room, a fire has started. The fire wall is made of stainless steel that is (1/2 in) thick. Heat in the room is sufficient t raise the outside surface temperature of one aide of the wall to 350F. If the thermal conductivity of the metal wall is 9.4 BTU/hr.ft. R, and the heat flux is 6.3 BTU/s.ft?. determine the surface temperature of the other side of the fire wall.