SOLUTION: the circumference of a circle is ab out 3 1/7 times the diameter of the circle. what is the circumeference of a circle who diameter is 42 cm?

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Question 316047: the circumference of a circle is ab out 3 1/7 times the diameter of the circle. what is the circumeference of a circle who diameter is 42 cm?
Found 2 solutions by Alan3354, jim_thompson5910:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
the circumference of a circle is ab out 3 1/7 times the diameter of the circle. what is the circumeference of a circle who diameter is 42 cm?
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It's 42 times 3 1/7. Multiply the 2 numbers.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
First note that 3%261%2F7=%287%2A3%2B1%29%2F7=22%2F7. Now just multiply 22%2F7 by 42 to get %2822%2F7%29%2A42=924%2F7=132. So the circumference is about 132 cm.