SOLUTION: Hi, I need help with the following could someone please help me. How would I solve the following: A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm

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Question 152166: Hi,
I need help with the following could someone please help me.
How would I solve the following:
A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm and r = 84 cm.
Thank you for your help.
J.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm and r = 84 cm.
C=2%2A%2822%2F7%29%2Ar
C has 2 values:
1st, r=+21cm
C=2%2A%2822%2F7%29%2A%2821cm%29
C=132cm
2nd, r=84cm
C=2%2A%2822%2F7%29%2A%2884cm%29
C=528cm
Thank you,
Jojo