Question

What is the radius of a circle with an area of 1 pi mm ^2

Answer 1

hello

to solve this problem, we can simply use the formula of area of a circle.

`\begin{gathered} A_(circle)=\pi r^2 \\ \pi=\text{constant} \\ r=\text{?} \end{gathered}`

let's input the values into the formula

`\begin{gathered} A_{\text{circle}}=\pi r^2 \\ 1=\pi r^2 \\ \text{divide both sides by pi} \\ (1)/(\pi)=r^2 \\ \text{take the square root of both sides} \\ r^2=(1)/(\pi) \\ r=\sqrt[]{(1)/(\pi)} \end{gathered}`