Exact same thing as addition. (+)
        
                    
             
        
        
        
It is 3.485 in the inside and 5.1 at the outside but the answer is <span>0.68333333333</span>
        
             
        
        
        
Answer:
First one is 5, second one is 6, third one is 6, the last one is 2
Step-by-step explanation:
Hope this helps an mark brainliest please!
 
        
             
        
        
        
Answer:
2 
Step-by-step explanation:
I dont know for sure though...