Question 530694
You can use a calculator to find square roots.
.
Google has a built in calculator.  Type sqrt(484) and it will reply 22.
.
You can test various multiplicands to determine if they are square roots.
.
There also is a old-fashioned long-hand "division" method you could learn.
.
You can use the quadratic equation.
.
The square of the square root minus the number = 0.
.
x^2 - 484 = 0
.
*[invoke quadratic "x", 1, 0, -484 ]