The 2.44-m high exterior wall of a backwoods shack is constructed of 16-mm-thickcedar boards that form the outside surface of the shack's wall, 38-mm by 90-mm pinestuds on 406-mm centers

with glass-fiber insulation batts between the studs, and a 10-mm-thick inside wall made of plywood. The exterior wall construction includes a sole plate that uses 38x 90 pine studs, and a top plate that uses two 38x90 pine studs a) Find the heat transfer coefficient U for each section of the exterior wall.Answers: U, = 0.3635 W/m2. K for sections with glass-fiber insulation batts andU, = 0.9754 W/m2 · K for sections with pine studs b) Find the overall heat transfer coefficient for this type of exterior wall construction.Answer: U = 0.4467 W/m² - K