molly48 molly48
  • 24-02-2017
  • Mathematics
contestada

What's the circumference?

Whats the circumference class=

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Lydia4072
Lydia4072 Lydia4072
  • 24-02-2017
The circumference is 62.8
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altavistard
altavistard altavistard
  • 24-02-2017
There are 2 formulas for Circumference in common use.  One, which is more useful here, is C = pi d, where d is the diameter.  So, the C here is pi times 20 cm.
The other formula is C =2 pi r.  This makes sense, since 2r=d.
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