Google Classroom
GeoGebraGeoGebra Classroom

Diameter and Circumference of a Circle

Instructions

Measure the circumference of the circle by unrolling it into a straight line. Explore the relationship between the circumference and the diameter of the circle.
  1. Drag the center of the circle to unroll it. Change the diameter using the point on the circle.
  2. Drag the slider to find out how many times the diameter fits in the circumference.