Question

The area of a square field is 200 square feet. What is the approximate length of each side of the field?

Answer 1

$\bf \textit{area of a square}\\\\ A=s^2~~ \begin{cases} s=length~of\\ \qquad a~side\\[-0.5em] \hrulefill\\ A=200 \end{cases}\implies 200=s^2\implies \sqrt{200}=s\implies 14.142\approx s$