Question

If a square has a side length of $\sqrt{2}$ cm, how long is the diagonal of the square?

• A. $2\sqrt{2}$ cm
• B. $\sqrt{2}\sqrt{2}$ cm
• C. $2$ cm
• D. $4$ cm

Answer 1

Answer: (C)

$2$ cm

We know that diagonal of a square $=$ $\sqrt{2}a$
Where, $a=$ side
Therefore, diagonal of a square $=$ $\sqrt{2}\times \sqrt{2}$
$=2$ cm