Answer: 48 centimeters 
Step-by-step explanation:
 
        
             
        
        
        
Add the two together and divide the answer by 137.16 add it together
        
             
        
        
        
I hope this helps you 
Area =3/4.5/12
Area =5/4.4
Area =5/16
        
             
        
        
        
<span>You will need to weight those balls only twice.
You weight 6 balls, 3 on one side of weight and 3 on another, and other
3 balls you have are in your hand.
Check picture bellow</span>