Circumference of a circle..? HELP PLZ

  • 0 votes

1. Calculate the circumference of each circle, leaving your answer in terms of pi

a) diameter =20cm          b) diameter =8mm          c) radius =10m          d) radius =3mm

Posted Fri 15th February, 2013 @ 13:46 by Prabhi xx

3 Answers

  • 1 vote

a) 20pi

b) 8pi

c) 20pi

d) 6pi

The formula for circumference is Diameter X Pi, so all you need to do is write your answer with pi next to it.
For C & D, the measurements are in radius. 2 X Radius = Diameter

Hope this helps :)

But dont actually write 'pi' write the symbol ;P 

Answered Fri 15th February, 2013 @ 15:45 by :) PurpleJaguar (: - Team GR
  • 0 votes

Thank you..i kept getting the same as the diameter and thought that was wrong...but its right! Thanks! ;)

Answered Fri 15th February, 2013 @ 15:54 by Prabhi xx
  • 0 votes

Its okay, glad I could help!


Answered Fri 15th February, 2013 @ 15:55 by :) PurpleJaguar (: - Team GR