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Which formula should be used to find the circumference of a circle?
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Which formula should be used to find the circumference of a circle?

User Vanarajcs
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5 votes

2\pi {}r}
User Davin
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Formula for circumference = πD (where D is the Diameter)

Since diameter = 2 x radius, we can also write the formula as :

Formula for circumference = 2πr (where r is the radius)
User Dmitri Sologoubenko
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