5 5/6
Cause .25 + 5 is smaller than 5/6 + 5
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Both angles added together = 180 degrees. They both have a straight line as their base.
So let <ABC = x
Then <CBD = 3x      Add the two angles
x + 3x = 180              Combine 
4x = 180                    Divide by 4
4x/4 = 180/4
x = 45
So 3x = 3*45 = 135
 
        
             
        
        
        
I think 3/4 of would be 48 making 4/4 of x 64
Just do 16•3
        
                    
             
        
        
        
Circumference= 2πr
Circumference= perimeter 
14.28km= 2(3.14)r
14.28= 6.2831853072r
divide both sides by 6.2831853072
2.27= r
ANSWER: The radius is 2.27km
Hope this helps! :)