Question

Is
$10 \times \sqrt{ \frac{2}{5} }$
= 40? Please Give Step By step Correct Answer Friends Please​

Answer 1

$\huge\mathtt{{\colorbox{silver}{★ANSWER★}}}$

$= 10 \times \sqrt{ \frac{2}{5} } \\ = 10 \times \sqrt{0.4} \\ = 10 \times \sqrt{ \frac{4}{10} } \\ = 10 \times \frac{2}{ \sqrt{10} } \\ = \sqrt{10} \times 2 \\ = \sqrt{10 \times 4} \\ = \sqrt{40}$

FINAL ANSWER = $\sqrt{40}$

NOTE : Your calculation has been proved incorrect. Above calculation is right ☑ :)