The outside wall of a refrigerated storage room is 10m long and 3m high and is constructed with 100-mm concrete blocks ( k=0.935W/m C) and 10 cm of fiber insulation board (k=0.048W/m C). The inside temp of the room is - 10 C and the convective heat transfer coefficient is 40 W/m2 K; the outside temp is 30 C with a convective heat transfer coefficient of 10 W/m2K on the outside wall surface. Calculate the overall heat-transfer coefficient. Please show work.