Answer:
51,013.84 kilometers
Step-by-step explanation:
1 kilometer= .6214
So you have to divide 31,700 by .6214
You get 51,013.839 or round it to 51,013.84
 
        
                    
             
        
        
        
Pi = 3.14
3.14 * 3.14 = 9.86
        
                    
             
        
        
        
Answer: 23.25m
Step-by-step explanation:
C=2πr=2·π·3.7≈23.24779m
 
        
             
        
        
        
80. there's no mathematical equations, also there's nothing to compare