What is the circumference of a circle with a radius of 9inches? (-2nr)

C = pi * d

C = 3.14 * 18
C = ?

thank you

To find the circumference of a circle, you can use the formula C = 2πr, where C represents the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and r represents the radius of the circle.

In this case, you have been given a radius of 9 inches.

To find the circumference, substitute the value of the radius into the formula:

C = 2π(9)

Now, calculate the result:

C = 2(3.14159)(9)
C = 2(28.27431)
C = 56.54862

Therefore, the circumference of a circle with a radius of 9 inches is approximately 56.54862 inches.