Mathematics, 23.06.2019 15:30 aleikebanks
What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pi. enter your answer in the box.10 points !mwill mark brainliest
Answers: 2
![\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=78.5 \end{cases}\implies 78.5=\pi r^2\implies \cfrac{78.5}{\pi }=r^2 \\\\\\ \sqrt{\cfrac{78.5}{\pi }}=r\implies 4.9987\approx r](/tpl/images/0008/4548/0d378.png)
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What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pi. enter your answe...
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