Copy of Explore! Radius and Diameter
See circle C below. You can adjust the length of the radius using the slider.
1. Move point A along the circle. Does the length of the radius ever change? What does moving A do?
2. Move points B or D along the circle. Does the length of the diameter ever change? What does moving B or D do?
3. Adjust the radius. What happens to the diameter when the radius is adjusted? How are they related?
*If the radius is 2, what is the diameter? If the radius if 5, what is the diameter?
4.Could we come up with a formula relating the diameter and radius?