Question 8176
circumference, C = {{{pi*d}}} or C = {{{2*pi*r}}}


you have radius = 3, so use the second version:


C = {{{2*pi*3}}}
C = {{{6*pi}}} --> exact solution.
--> C = 18.84955592 by evaluating on a calculator which rounds to 18.85 to the nearest hundredth.


jon.