What Is the Square Root?

Square Root:

If a number multiplied by itself, the result is called square of the number. For the result, the original number will become 'square root of it

For example: $\sqrt{16}= 4$
We know $4 \times 4 = 16$. From this we can tell two things.
$=> 16 $ is the square of 4
$=> 4 $ is the square root of 16