An inexpensive food and beverage container is fabricated from 25-mm-thick polystyrene (k = 0.023 W/m. K) and has interior dimensions of 0.8 m x 0.6 m x 0.6 m. Under conditions for which an inner surface temperature of approximately 2°C is maintained by an ice-water mixture and an outer surface temperature of 20°C is maintained by the ambient. What is the heat flux through the container wall? Assuming negligible heat gain through the 0.8 m x 0.6 m base of the cooler, what is the total heat load for the prescribed conditions?