Respuesta :
Answer:
56.6mm
Step-by-step explanation:
Take the radius and double it to get the diameter
9mm * 2 = 18mm
Multiply the diameter by pi to get the circumference of the circle
18mm * 3.1415 = 56.547mm
Answer:
56.6mm
Step-by-step explanation:
Take the radius and double it to get the diameter
9mm * 2 = 18mm
Multiply the diameter by pi to get the circumference of the circle
18mm * 3.1415 = 56.547mm