Hey there! 
I think that it safe to say that this room is a rectangular prism. Therefore, the top and bottom (floor and ceiling) have the same area. We see that our floor dimensions are 12 cm long and 7 cm wide. This also applies to the ceiling. Let’s take our two sides and multiply then to find our area. 
12(7)=84
Therefore, the area is 84 square centimeters. 
I hope that this helps!
        
                    
             
        
        
        
Answer:
1300 cm = 13 m
Step-by-step explanation:
We need to find meters in 1300 cm.
We know that,
1 m = 100 cm
1 cm = (1/100) m
It means,

Hence, there are 13 m in 1300 cm.
 
        
             
        
        
        
For this question the answer would be x=-3 and x=-2
        
             
        
        
        
The answer is A. Hope this helpssssssss