Question

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

Answer 1

Calculate the length of the square.

Let the length of the side of square be $`x´m$.

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

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

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