Mathematics: The area of a circle is 49 pi. find, in terms of pi, the circumference of the circle.

The area of a circle is 49 pi. find, in terms

Ответ:

lovebunny33921

10.01.2022

$\bf \textit{area of a circle}\\\\
A=\pi r^2\qquad A=49\implies 49=\pi r^2
\\\\\\
\sqrt{\cfrac{49}{\pi }}=r\implies \cfrac{7}{\sqrt{\pi }}=\boxed{r}\\\\
-----------------------------\\\\
\textit{circumference of a circle}\\\\
C=2\pi r\implies C=2\pi \left( \boxed{\cfrac{7}{\sqrt{\pi }}} \right)$

simplify, if you need to

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Ответ:

Mune4184

26.01.2021

Mathematics

480

Step-by-step explanation:

15x8x4=480.

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The area of a circle is 49 pi. find, in terms of pi, the circumference of the circle.

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