Find the values of r (radius), d (diameter), and A (area) for this particular circle. Leave

C  =  22pi ft

C  =  2 * pi  * r       ....so....

22 pi   =  2 * pi * r         divide out pi

22 =  2 * r         divide by 2

11 ft  =  r         22 ft   =    d

And   Area   =  pi  (r^2)   =  121 pi   ft^2

Mmmmm...  I had hectictar double-check my answer.....she doesn't find any error, either....

????