SOLUTION: vi. A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm and r = 84 cm.

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Question 162978: vi. A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm and r = 84 cm.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first part to get you started


C=2%2A%2822%2F7%29%2Ar Start with the given function


C=2%2A%2822%2F7%29%2A%2821%29 Plug in r=21


C=924%2F7 Multiply


C=132 Reduce