molly48
molly48
24-02-2017
Mathematics
contestada
What's the circumference?
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Lydia4072
Lydia4072
24-02-2017
The circumference is 62.8
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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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