Question

If $\sqrt{2}=1.41$, then $\frac{1}{\sqrt{2}}$=?
(a) 0.075
(b) 0.75
(c) 0.705
(d) 7.05

Answer 1

(c) 0.705
∵$\sqrt{2}$ = 1.41
We have:
$$\begin{gathered} \frac{1}{\sqrt{2}} \\ =\frac{1}{\sqrt{2}}\times \frac{\sqrt{2}}{\sqrt{2}} \\ =\frac{\sqrt{2}}{2} \\ =\frac{1.41}{2} \\ =0.705 \end{gathered}$$