The area of a square is given by the following formula:
[tex]A=s^2[/tex]
To find the sidelength of the square, solve the equation for s:
[tex]s=\sqrt[]{A}[/tex]
Replace the given value in the equation to find the sidelength:
[tex]\begin{gathered} s=\sqrt[]{\frac{16}{49}} \\ s=\frac{4}{7} \end{gathered}[/tex]
The sidelength is 4/7cm.
