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02-09-2014
Mathematics

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What is the diameter of a circle whose circumference is 5?
1) 2.5/pi squared
2) 2.5/pi
3) 5/pi squared
4) 5/pi

Respuesta :

02-09-2014

[tex]Circumference\ of\ the\ circle:\\\\ C=2 \pi r\ \ , r-radius\\\\ 5=2 \pi r\ \ \ |:2 \pi \\\\ \frac{5}{2 \pi }=r\\\\ r=\frac{2,5}{ \pi} \\\\Answer\ is\ 2)\ \frac{2,5}{ \pi}.[/tex]

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