Circumference of a circle is equal to pi-r2pi-rdisplaystyle2- frac-pi r-2-rdisplaystyle frac-pi r-2-

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Circumference of a circle is equal to
$π r$
$2 π r$
$2 + \frac{π r}{2} r$
$\frac{π r}{2}$

\frac{π r}{2}

π r

2 π r

2 + \frac{π r}{2} r

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