A wheel has a diameter of 16 cm.

Approximately how far does it travel in 5 revolutions?

A.
502.4 cm

B.
251.2 cm

C.
100.48 cm

D.
80 cm

Question

A wheel has a diameter of 16 cm. 

Approximately how far does it travel in 5 revolutions?
  
 
 

 
 

  

  A. 
  502.4 cm   
   

 
 

  

  B. 
  251.2 cm   
   

 
 

  

  C. 
  100.48 cm   
   

 
 

  

  D. 
  80 cm

anonymous · Answer

@IMStuck

anonymous · Answer

@IMStuck

dejmccray · Answer

ok do C=d*3.14 so 16*3.14=50.24 then multiply that by 5 it = 251.20 which would be B

imstuck · Answer

Ok, here's how you do this.  If the circle has a diameter, what is its circumference?  $$C = 2\pi r$$or $$C=\pi d$$Your diameter is 16.  So your formula is $$C=16 \pi $$So in 5 full revolutions you go around 5 times 16 pi, or 80 pi.  80 times pi = 251.3 or B