Question

Radius of a circle with an area of 907.9 centimeters

Answer 1

`\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\ -----\\ A=907.9 \end{cases}\implies 907.9=\pi r^2 \\\\\\ \cfrac{907.9}{\pi }=r^2\implies \sqrt{\cfrac{907.9}{\pi }}=r`