What is the circumference of a circle that has a diameter of 9 in?

The circumference is 28.27in.

The circumference of the circle is 28.26 in.

Step-by-step explanation:

Given,

The diameter of a circle = 9 in

Radius of the circle (r) = 4.5 in

To find the circumference of the circle.

Formula

The circumference of the circle of radius r = 2πr

Now,

The circumference of the circle = 2*3.14*4.5 in [ taking π = 3.14]

= 28.26 in