Answer: yes because pi = 22/7 as a fraction and as a decimal that never terminates
Step-by
 
        
             
        
        
        
Answer: 
5/6
Step-by-step explanation:
 
        
             
        
        
        
Answer:
n = 2b + 4
Step-by-step explanation:
4 years older = +4
2 times his brother = 2b
n= 2b+4
 
        
             
        
        
        
Answer:
26.8 pi or approx. 84.19
Step-by-step explanation:
Circumference can be found by multiplying the diameter by pi. The diameter is twice the radius, which in this case is 13.4, so it's 13.4 * 2 = 26.8. 
Multiply by pi, and you've got your answer!