Question

Find the length of the side of a square whose area is $441m^2$.

Answer 1

Find the length of the square.

Let the length of the side of square be $xcm$.

So, Area of square $=441m^2$

$$\begin{gathered} \Rightarrow x^2=441m^2 \\ \Rightarrow x=21m \end{gathered}$$

Hence, the length of square is $21m$.