Solve for r

harpazo

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Math practice for you on the Fourth of July 2018. Enjoy.

A = (pi)r^2
 

TheJason

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Solve for \(\displaystyle r\)

\(\displaystyle A = (\pi)r^{2}\)

\(\displaystyle \dfrac{A}{\pi} = \dfrac{(\pi)r^{2}}{\pi}\)

\(\displaystyle \dfrac{A}{\pi} = r^{2}\)

\(\displaystyle \sqrt{\dfrac{A}{\pi}} = \sqrt{r^{2}}\)

\(\displaystyle \sqrt{\dfrac{A}{\pi}} = r\)
 
Last edited:

harpazo

Pure Mathematics
Banned
Mar 20, 2018
5,788
361
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NYC
Solve for \(\displaystyle r\)

\(\displaystyle A = (\pi)r^{2}\)

\(\displaystyle \dfrac{A}{\pi} = \dfrac{(\pi)r^{2}}{\pi}\)

\(\displaystyle \dfrac{A}{\pi} = r^{2}\)

\(\displaystyle \sqrt{\dfrac{A}{\pi}} = \sqrt{r^{2}}\)

\(\displaystyle \sqrt{\dfrac{A}{\pi}} = r\)
It's good to review basic math.