19-03-2015
Mathematics

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The ratio of the area of a circle to the circumference of the circle ([tex] \frac{A}{C} [/tex]) is [tex] \frac{7}{1} [/tex]. Find the circumference of the circle. Leave your answer in terms of pi.

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konrad509 konrad509

19-03-2015

[tex]\dfrac{\pi r^2}{2\pi r}=\dfrac{7}{1}\\ \dfrac{r}{2}=\dfrac{7}{1}\\ r=14\\\\ C=2\pi \cdot14=28\pi[/tex]

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