For this case we have the following expression:

We must find the value of the expression when:

Substituting we have:

Finally, the value of the expression is:

ANswer:

I think it might be D. I'm just giving an educated guess.
C=2πr=2·π·13≈81.68141
C=81.68
Answer:
8,000,802,4800
Step-by-step explanation:
Katrillion isn't a real value but everything else is.
Y=-4/3x+300 hope this helps