# The formula for finding the area of a square is A=s^2. How do you transform this formula to find a formula for the length of a side of a square with an area A?

Oct 29, 2016

$s = \sqrt{A}$

#### Explanation:

Use the same formula and change the subject to be $s$. IN other words isolate $s$.

Usually the process is as follows: Start by knowing the length of the side.

$\text{side " rarr " square the side " rarr " Area}$

Do exactly the opposite: read from right to left

$\text{side " larr " find the square root " larr " Area}$

In Maths:

${s}^{2} = A$

$s = \sqrt{A}$