# What is the square root of 0.16?

Mar 27, 2018

$\pm 0.4$

#### Explanation:

$\text{note that } 0.16 = \frac{16}{100}$

$\Rightarrow \sqrt{0.16} = \sqrt{\frac{16}{100}}$

$\Rightarrow \sqrt{\frac{16}{100}} = \pm \frac{4}{10} = \pm \frac{2}{5} \leftarrow \textcolor{b l u e}{\text{note plus or minus}}$

$\Rightarrow \sqrt{0.16} = \pm \frac{2}{5} = \pm 0.4$