"4. Calculate how much money could be saved per square meter of wall area in one heating season if 92mm batt insulation (k = 0.042 W/mK) is placed in the air space of the wall. The thermal resistance of the air space in the wall is 0.20 m2.K/W, and the Rtotal of the wall before the insulation is added is the same as question 2. The house is electrically heated, the cost of electricity is $0.14 per kWh, and assume electrical conversion to heat is 100%. You are correct if you are within 10% of the correct answer." A/ Question 5 (Mandatory) (0.5 points) Listen "5. If 92mm of batt insulation (k= 0.042 W/mK) is added to the wall in question 1 in the 92mm air space, calculate the surface temperature on the warm side of the 92mm of batt insulation added in place of the air space. The indoor air temperature is +21C, and the outdoor air temperature is -5C. You are correct if you are within 1C of the correct answer." A