[tex]\boxed{Ratio=\frac{r}{2}}[/tex]
Explanation:
Here we want to know the ratio of the area of a circle with radius r to the circumference of a circle. In other words, we want to know:
[tex]Ratio=\frac{A}{C} \\ \\ \\ Where: \\ \\ A:Area \ of \ the \ circle \\ \\ C:Circumference \\ \\ \\ The \ area \ of \ a \ circle \ is: \\ \\ A=\pi r^2 \\ \\ \\ Circumference: \\ \\ C=2\pi r \\ \\ \\ Ratio=\frac{\pi r^2}{2\pi r} \\ \\ \boxed{Ratio=\frac{r}{2}}[/tex]
Learn more:
Slope and ratio: https://brainly.com/question/13881238
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