SOLUTION: A circle has a circumference of 20(pi)meters. Sorry There is no key stroke for pi. Find the radius of the circle. Thanks.

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Question 4161: A circle has a circumference of 20(pi)meters. Sorry There is no key stroke for pi. Find the radius of the circle. Thanks.
Found 2 solutions by Earlsdon, cleomenius:
Answer by Earlsdon(6294) (Show Source):
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If you leave a 20% tip for the waiter for a $100.00 check, that will be 20% of $100.00. Change the percentage to a decimal by dividing 20 by 100, this comes to 0.2 then multiply this by the amount of the check ($100.00). The waiter's tip would be 0.2($100.00) = $20.00
Similarly for the captain's tip of 10%. 0.1($100.00) = $10.00
The final bill would be: $100.00 + $20.00 + $10.00 = $130.00

Answer by cleomenius(959) (Show Source):
You can put this solution on YOUR website!
We can use the formula for the circumference of a circle:
C = 2 (pi) r
20 (pi) = 2 (pi ) r
20 = 2 r
10 = r.
Cleomenius.