The Lesson
The diameter of a circle is twice the radius.
How to Find the Diameter from the Radius
Finding the diameter from the radius is easy.Question
What is the radius of the circle, with radius 5 cm, below?
Step-by-Step:
1
Multiply the radius, 5cm, by 2.
5 × 2 = 10 cm
Answer:
The diameter of the circle is 10 cm.Interactive Widget
Here is an interactive widget to help you learn about finding the diameter of a circle from its radius.What Is a Circle?
A circle is a shape containing a set of points that are all the same distance from the center. This distance is the radius.
