Please attach a photo so I may help you.
Answer:
33.3cm²
Step-by-step explanation:
9 multiplied by 3.7 is equal to 33.3cm²
Answer:
20m
Step-by-step explanation:
The rooms are 4m x 5m.
To find the area, multiply length by width: 4*5=20
Answer:
Rational
Step-by-step explanation:
A rational number can be written as a fraction of the form.

and a and b are integers.

Hence in this case a=999 and b=100.
Since both are integers with b being a non-zero integer, we conclude that 9.99 is a rational number.
8/3 is your simplified answer