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19-11-2018
Mathematics

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pls help i dont understand

pls help i dont understand class=

Respuesta :

19-11-2018

The formula for the circumference is 2πr.

The diameter d is given, which is 2 times the radius r (d = 2r)

So you have to calculate π d = 3.142×1.8 ≈ 5.7

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