Question

Find the square root of the following decimal number.
$2.56$

Answer 1

$2.56=\frac{256}{100}=\frac{{16}^2}{{10}^2}=(\frac{16}{10}{)}^2$

$\sqrt{2.56}=\sqrt{(\frac{16}{10}{)}^2}=\frac{16}{10}=1.6$