Formula of circle: 
C= 2πr
The radius is half of the diameter, so divide 9 by 2
18/2=9
Then plug in 9 as the radius in the formula.
C= 2π(9)
Using you calculator multiply 2 by the symbol "π" and 9
 
Exact Form is 18π
Decimal Form is 56.54866776...
 
        
             
        
        
        
Answer:
noun because it is a person place or thing
Explanation:
I prefer to call it prison for kids :)
 
        
             
        
        
        
If you do not have future goals you will not have something to work twards. Inadvertently people are always making goals like finishing homework before watching tv, but specific knowledge biased goals help you achieve things for the long term.
        
                    
             
        
        
        
 Understanding big concepts and ideas will better ensure you comprehend the material