The area is the thing we are looking for.
So, area of a circle equation
[tex]A=\pi r^2[/tex]
R is the radius, so we need to divide the diamater by 2, which means 12 is our radius.
Now, we just plug our values in
[tex]A = \pi r ^2\\A=3.14\times12^2\\A=452.16[/tex]
The area is 452.16 Feet