Question

How to solve under root of 45 up to 3 decimal place if under root of 5 is given 2.236?

Answer 1

$\sqrt{45} \: can \: be \: written \: as \: \sqrt{ {3}^{2} \times 5}$
$= 3 \sqrt{5}$
$= 3 \times 2.236$
$= 6.708(ans)$