# Square Root of a Number

The square root is a very important concept in many areas of science. A number $r$ is said to be a square root of a given number if the given number $=r^2.$ It is denoted by the radical symbol $\sqrt{}.$ So we have $r=\sqrt{r^2}.$ For example, we know that $2 \times 2=4,$ so by definition the square root of $4$ is $2.$

Some important pages of square root:

Read Also: why root 2 is irrational.

Square root of Prime is Irrational

But, how do we find the square root of a number? Here you can find the answer. So let’s start computing.