A10-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.