The circumference is 24\(\pi\) or about 75.4, because the equation for circumference of a circle is diameter x pi.
the area is 144\(\pi\) or about 452.4, because the equation for solving area of a circle is pi x (radius squared). the radius is half the diameter, which is 12. 12 squared is 144, and 144 times pi is about 452.4. :)
