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Delvig [45]
3 years ago
15

The area of circular garden is 530.66 feet2. What is the circumference of the garden? (Use 3.14 for .

Mathematics
1 answer:
iVinArrow [24]3 years ago
3 0
\bf \textit{area of a circle}\\\\
A=\pi r^2\quad 
\begin{cases}
r=radius\\
------\\
A=530.66
\end{cases}\implies 530.66=\pi r^2
\\\\\\
\cfrac{530.66}{\pi }=r^2\implies \sqrt{\cfrac{530.66}{\pi }}=r
\\\\\\
\textit{circumference of a circle}\\\\
C=2\pi r\qquad \implies C=2\pi \left( \sqrt{\cfrac{530.66}{\pi }} \right)
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