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chancemorris123
 one year ago
Find the circumference of a circle whose area is /.
A.
B.
C.
D.
chancemorris123
 one year ago
Find the circumference of a circle whose area is /. A. B. C. D.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(\bf \textit{area of a circle}=\pi r^2\qquad area=60\pi \qquad thus \\ \quad \\ 60\pi =\pi r^2\impliedby \textit{solve for "r"}\) what does that give you for "r"? or radius

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(\bf \textit{area of a circle}=\pi r^2\qquad area=60\pi \qquad thus \\ \quad \\ 60\pi =\pi r^2\implies \cfrac{60\cancel{\pi }}{\cancel{\pi }}=r^2\implies \sqrt{60}=\sqrt{r^2}\implies \sqrt{60}=r\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that was close though

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so now that we know what "r" is let us use it in the circumference formula then \(\bf circumference=2\pi r\qquad \sqrt{60}=r\qquad then \\ \quad \\ circumference=2\pi \left( \sqrt{60} \right)\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and then you'd want to simplify that 60, see if you can squeeze something out of the radical

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0one may note that \(\huge \pi \ne pie\) but yours is tastier though

chancemorris123
 one year ago
Best ResponseYou've already chosen the best response.0so is it 30pie

chancemorris123
 one year ago
Best ResponseYou've already chosen the best response.0so is it 30 pie?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(\bf circumference=2\pi r\qquad \sqrt{60}=r\qquad then \\ \quad \\ circumference=2\pi \left( \sqrt{60} \right) \\ \quad \\ {\color{brown}{ 60\to 2\cdot 2\cdot 15\to 2^2\cdot 15 }}\qquad thus \\ \quad \\ 2\pi \left( \sqrt{60} \right)\implies 2\pi \left( \sqrt{{\color{brown}{ 2^2\cdot 15}}} \right)\implies 2\pi \sqrt{2^2}\sqrt{15}\)

chancemorris123
 one year ago
Best ResponseYou've already chosen the best response.0so its 2square root 5
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