Understanding the Relationship Between Radius and Diameter of a Circle
Learn why the radius is half the diameter in circles, clarifying common misconceptions.
How to Accurately Measure the Diameter of a Circle
Learn the best techniques to measure a circle's diameter, including using a ruler and the relationship with circumference.
How to Find the Radius of a Circle from Its Center
Learn how to measure the radius of a circle using its center and points on its edge with simple methods and formulas.