Question 612321
Circumference of a circle is given by {{{C = 2* pi * r}}} where r is the radius. You are told you can use 3.14 for pi and that the radius is 11 inches

So
{{{C = 2 * 11 * 3.14}}}
So plug in 11, solve for C. And then round to the nearest 10.
138.2 inches