Given that the house representation is given by 1/44"=1', then the house who dimension is 1.5" by 2.25" has an actual length of: (2.25)/(1/4)*1 =2.25*4 =9' and actual width of: (1.5)/(1/4)*1 =1.5*4 =6' therefore the size of the room will be: Area=length*width =9*6 =36 square inches