Question

Find the square root of the following decimal number.
$18.49$

Answer 1

$18.49=\frac{1849}{100}=\frac{{43}^2}{{10}^2}=(\frac{43}{10}{)}^2$

$\sqrt{18.49}=\sqrt{(\frac{43}{10}{)}^2}=\frac{43}{10}=4.3$