<span>
the complete question in the attached figure</span>
The answer is the option A 
9.9 grams 
because the balance is accurate to the nearest 1/10 gram; thus, the <span>highest level of accuracy appropriate to the limitations of the balance is 0.10 gram (1/10)</span>
 
        
             
        
        
        
Thw answer is -51
Found through long division
 
        
        
        
Answer:
60
Step-by-step explanation:
Area = ((a+b)/2)h=((7+13)/2)*6=60