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What is the ratio of the area of a circle with the radius r to the circumference of the circle?

Verified Answer :

dalendrk

The area of the circle: \(A_O=\pi r^2\)

The circumference of the circle: \(C_O=2\pi r\)

The ratio: \(\dfrac{A_O}{C_O}=\dfrac{\pi r^2}{2\pi r}=\dfrac{r}{2}\)

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