Question 2: Consider Civil Engineering department UET Peshawar Academic block which is made of electrically heated brick (k =0.40 Btu/h ft. °F) whose walls are 24 ft high and 1 ft thick. Two of the walls of the Department are 110 ft long and the others are 50 ft long. The house is always maintained at 80°F while the temperature of the outdoors varies. On a certain day, the temperature of the inner surface of the walls is measured to be at 65°F while the average temperature of the outer surface is observed to remain at 55°F during the day for 10 h and at 30°F at night for 14 h. Determine the amount of heat lost from the house that day. Also determine the cost of that heat loss to the homeowner for an electricity price of $0.09/kWh.