Some help will be nice, and I have some more questions to come!

Answer:
30 inches
Step-by-step explanation:
Circumference = 2π * r
r = 4.75
Circumference = 2π * 4.75
Circumference = 6.2831 * 4.75
Circumference = 29.5305
If you round that answer the closest whole number it is 30 inches.