Respuesta :
Answer:
Circumference of circle = 18π
Step-by-step explanation:
Circumference of circle = 2×π×r
Circumference of circle = 2×π×9
Circumference of circle = 18π
Answer:
the circumference is,18 pi
Step-by-step explanation:
the equation for circumference is C=2 pi r. r represents radius. just replace r with nine and solve