ioriv830
ioriv830 ioriv830
  • 25-04-2017
  • Mathematics
contestada

work out the circumferance of the circle, using pie as 3.14, and radius as 3cm

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Equanimity
Equanimity Equanimity
  • 25-04-2017
The Circumference of a circle is 2PiR or PiD.
3.14 x 3 x 2
3.14 x 6
18.84 is your answer.

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irspow
irspow irspow
  • 25-04-2017
C=2πr in this case and using the approximation...

C=2(3.14)3=18.84cm  (note 22/7 is a much better approximation and is just as easy to use :))
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