Greetings!
If the length of one square is equal to 6 cm, then two would be:
6*2
=12
The formula to find the area of a square is:
[tex]l^2[/tex]
Input the information we know:
[tex]12^2[/tex]
[tex]=144[/tex]
The area of the circle would be [tex]144cm^2[/tex].
Hope this helps.
-Benjamin