SOLUTION: Given that c=2pir A)find c when pi =3.142 and r=50 B)find r when c=286 and pi=3 1/2

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Question 1160291: Given that c=2pir
A)find c when pi =3.142 and r=50
B)find r when c=286 and pi=3 1/2
Found 3 solutions by Boreal, Alan3354, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
a. 2pi*r=2 pi*50=314.2 units
b. r=c/2pi
=286/7=40.86 units

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Why do you change the value of pi?
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The buybull says pi = 3
That's closer than 3.5
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3.142 is off by only 0.013%
22/7 is off by 0.004%
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3.5 is just silly.

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

The value   31%2F2  is NEVER used as an approximation for pi.


Wake up . . .