Answer:
Step-by-step explanation:
Let's find the volume of the room in ftÂł and that will give
14Ă—22Ă—9=2772ftÂł
There are deductions. Hence we subtract them from this value
3×5=15, but there are two, hence 15×2=30ft²
And 4×7=28ft²
Hence 2772-(30+28)=2714
Dividing this value by 320 gives
8.4(to 2s.f)