Surface area of a rectangular carpet is Length×width
now [5×2.2] yard =11 yard now it's cost will be 11×12$=132$
Now total surface area of the room excluding the carpet 7 (4.5+1.5) yard= 52 yard Now the total cost will be 52×12$=624$
Now total surface area of the room including the carpet is
(624+132)$=756$.