# What is the square root of 70?

Sep 10, 2015

$\sqrt{70} \approx 8.3666$ (and $- 8.366$ if you allow other than the primary root)
$\textcolor{w h i t e}{\text{XXX}} 70 = 2 \times 5 \times 7$
The only easy way to evaluate $\sqrt{70}$ is to use a calculator (or similar technology)