Answers: 2
![A=\pi r^2\\r^2=\frac{A}{\pi} \\r=\sqrt[]{\frac{A}{\pi} }](/tpl/images/0619/7359/e7674.png)
![r=\sqrt[]{\frac{36\pi}{\pi} }](/tpl/images/0619/7359/2b955.png)
![r=\sqrt[]{36}](/tpl/images/0619/7359/6b286.png)
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If the area of a circle is 36pi, what is the circumference...
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