[tex]\huge\boxed{113.04}[/tex]
Diameter ([tex]d[/tex]) is equal to twice the radius ([tex]r[/tex]). So, find the radius by dividing [tex]\frac{12}{2}[/tex]. The radius, or [tex]r[/tex], is [tex]6[/tex].
Substitute in the value. [tex]A=3.14*6^2[/tex]
Follow the order of operations and solve the exponent first. [tex]A=3.14*36[/tex]
Multiply. [tex]A=\boxed{113.04}[/tex]
