Answer:
c
Step-by-step explanation:
 
        
             
        
        
        
You are everything, you are loved :)
        
             
        
        
        
The Formula would be A=3.14rr
 Which is A=3.14(3)(3)
The answer is 28.26
        
                    
             
        
        
        
The ratio of circumference to diameter is independent of the radius.
Defining C=circumference, r=radius, D=diameter =  2r
Circumference = C = 2 π r = π D  
=> 
ratio of circumference / diameter
= C/D = π
 
        
                    
             
        
        
        
well, what is 9,744/2,280? take that and move the decimal point two places to the right to find the answer.