#4**+2 **

We need to find the radius......the area is given by

36 = pi (radius)^2 divide both sides by

36 / pi = (radius)^2 take the square root of both sides

sqrt (36 / pi) = radius = 6 / sqrt(pi)

And the circumference is given by :

2 * pi * radius

2 * pi * 6/ sqrt (pi) =

12sqrt(pi) ≈ 21.27 in

CPhill
Mar 23, 2017