A circle fits inside of a square, touching all of the sides of the square.
side of the square is 6.
In this particular arrangement
Side of the square =Diameter of the circle
Radius=Diameter/2=6/2=3
Area of the circle can be given as
[tex] \\
\
A=\pi r^2\\
\\
\
A=\pi*3^2,r=3\\
\\
\
A=9 \pi\\ [/tex]