3 years ago

The area of a circular trampoline is 115.88 square feet. What is the radius of the trampoline? Round to the nearest hundredth.

1 answer:

3 0

$\bf \textit{area of a circle}\\\\
A=\pi r^2~~
\begin{cases}
r=radius\\
-----\\
A=115.88
\end{cases}\implies 115.88=\pi r^2
\\\\\\
\cfrac{115.88}{\pi }=r^2\implies \sqrt{\cfrac{115.88}{\pi }}=r$

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