What is the diameter of a 12cm circle?

Answer 1

using the formula circumference=diameter X pi:

circumference=diameter X pi

circumference/pi=diamter X pi/pi

circumference/pi=diameter

therefore,

diameter=circumference/pi

diameter=12mm/3.14

diameter=3.821mm

Answer 2

Well, isn't that just a happy little question! The diameter of a circle is the distance across the circle passing through the center. So, for a 12cm circle, the diameter would be 12cm. Just imagine that circle on your canvas, perfectly round and full of possibilities!