Question

part a
complete the equation to find the length of a side of a square that has an area of 49 cm²
$sqrt{square}=square$

Explanation:

Step1: Recall area formula of square

The area formula of a square is $A = s^{2}$, where $A$ is the area and $s$ is the side - length. Given $A = 49\ cm^{2}$, we need to solve for $s$.

Step2: Isolate the side - length

Taking the square root of both sides of the equation $A=s^{2}$, we get $s=\sqrt{A}$. Substituting $A = 49$ into the equation, we have $\sqrt{49}=s$.

Answer:

$\sqrt{49}=7$