im sorry but can you show more so i can help you Step-by-step explanation:
Answer:
[tex]\huge\boxed{\sf C = 18 \pi \ cm}[/tex]
Step-by-step explanation:
Diameter = 18 cm
Radius = D / 2 = 18 / 2 = 9 cm
Circumference = 2πr
C = 2π (9)
C = 18 π cm
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!