Respuesta :

daisycakesgrl
I don't see an answer choice for this question. The equation for circumference is 2[tex] \pi [/tex]r
You should get 2pi(3.5)=21.99 
altavistard
None of the answers are "exact" if you use 3.14 for pi.

That 3.14 is an approx. to pi.

If you want an exact answer, include "pi" in your answer, not a numerical value:

C = 2pi*r becomes     C = 2pi(3.5 cm) = 7pi cm, or 7[tex] \pi [/tex] cm