Question

What is the circumference of a circle with the radius of 9 inches?

Answer 1

If it is using pi as 3.14, it is 56.52.

If it is just the pi symbol, it is 18π.

Explanation:

We do 9 x 3.14 = 28.26 and then you multiply that by 2 to get 56.52.

We do 9 x π = 9π. Then multiply by 2 to get 18π.