Answer :

Giovi
Knowing that your area is: [tex]A= \pi r^{2}=36 in^{2} [/tex] you can find the radius as:
[tex]r= \sqrt{ \frac{36}{ \pi } } =3.4 in[/tex];
With this you can evaluate the circumference as:
[tex]C=2 \pi r=2*3.14*3.4=21.3 in[/tex]

Other Questions