In this question we have to find the circumference of the circle in terms of pi where radius is 20 inches .
And to find the circumference, we use the following formula of the circumference
[tex]circumference = 2\pi r[/tex]
Substituting the given value of r, we will get
[tex]Circumference = 2* \pi *20 = 40 \pi \ inches[/tex]
And the correct option is the second option .