Question

given root5=2.36 approx find to three places of decimal the value 2/root5

Answer 1

if root 2 = 1.414 and root 5= 2.236, find the valueof root 10 - root 5 divided by 2 root 2 upto three places of decimals.

Answer 2

$\frac{2}{ \sqrt{5} } = \frac{2}{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } \\ = \frac{ 2\sqrt{5} }{5} \\ = \frac{2 \times 2.36}{5} \\ = \frac{4.72}{5} \\ = 0.944$