If a circle has radius 
R, its circumference equals to 
2πR where π is an irrational number that, approximately, equals to 
3.1415926
        
             
        
        
        
Answer:
The third one
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
21,500
Step-by-step explanation:
 
        
             
        
        
        
The answer would be D Because one side is 18 and another is 26 and 18 times 26 is 468.
        
                    
             
        
        
        
The ratio would be 3:1
( the 6 triangles are blue, which I’m pretty sure they are.)
Since there are 18 yellows and 6 blues, and the question calls for the ratio of the yellows to the blues, the ratio is 18:6. But you always have to simplify. The GCF is 6, so you would divide both of them by 6. The ratio is then 3:1.