The area of the circle is given by the formula
[tex]A=\pi\cdot r^2[/tex]
The diameter is 12, so the radius is 6
Then we replace that value (6) in the equation
[tex]A=\pi\cdot(6)^2=\text{ 113.097}[/tex]
Rounded to the nearest hundredth is A= 113.10 units^2.
