Final answer:
The circumference of a circle with a 9-inch diameter, using 3.14 for pi, is 28.26 inches.
Step-by-step explanation:
To calculate the circumference of a circle with a diameter of 9 inches, you can use the formula C = πd, where π (pi) is approximately 3.14 and d is the diameter of the circle. Plug in the diameter:
C = 3.14 × 9 inches
Multiply 3.14 by 9 to get the circumference:
C = 28.26 inches
So, a circle with a diameter of 9 inches has a circumference of approximately 28.26 inches when using 3.14 for pi.