Awall 2 cm thick is to be constructed from material that has an average thermal conductivity of 1,3 w/m.°c. the wall is to be insulated with material having an average thermal conductivity of 0.35 w/m.ºc, so that the heat loss per square meter will not exceed 1830 w. assuming that the inner and outer surface temperatures of the insulated wall are 130°c and 30°c, calculate the thickness of insulation required.