What is the circumference of a circle whose area of 121 pi square meters?

Answer: about 69

Step-by-step explanation:

you have to work in reverse

Area = (pi) r^2

because this equalled 121, the radius has to be 11.

SO, we can use the radius to find the circumference

Circumference = 2 (pi) r

Circumference = 22pi which is 69.08

C=22pi or 69.115 ...

Step-by-step explanation:

A=pi r^2

solve r=11

C=2pi r

C=22pi