Answer
The given circle has:
circumference = $12\pi$ centimeters
area = $36\pi$ square centimeters
Work Step by Step
RECALL:
(i) The circumference (C) of a circle is given by the formula $C=2\pi{r}$ where r =radius; and
(ii) The area (A) of a circle is given by the formula $A=\pi{r^2}$ where r = radius
With a radius of 6 centimeters, use the formulas above to have:
$C=2\pi(6) = 12\pi$ centimeters
$A=\pi(6^2) = 36\pi$ square centimeters