# What is the square Root of 2 over square Root of 5?

$\sqrt{\frac{2}{5}}$
Given: $\frac{\sqrt{2}}{\sqrt{5}}$
Use the radical rule: $\frac{\sqrt{m}}{\sqrt{n}} = \sqrt{\frac{m}{n}}$
$\frac{\sqrt{2}}{\sqrt{5}} = \sqrt{\frac{2}{5}} \approx 0.6325$