A 10-in-thick., 30-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid...

A 10-in-thick., 30-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k = 0.40 Btu/h·ft·°F) of cross section 7 in × 7 in, or identical size bricks withnine square air holes (k = 0.015 Btu/h·ft·°F) that are 9 inlong and have a cross section of 1.5 in× 1.5 in . There isa 0.5- in-thick plaster layer (k = 0.10 Btu/h·ft·°F) between twoadjacent bricks on all four sides and on both sides of the wall. The house is maintained at 80°F and the ambient temperature outside is35°F. Taking the heat transfer coefficients at the inner andouter  surfaces of the wall to be 1.5 and 6 Btu/h·ft2·°F. respectively, determine the rate of heat transfer through the wall constructed of(a) solid bricks and (b) bricks with air holes.