Circle Radius Calculator - Find Radius from Circumference
Easily calculate the radius of a circle when you know the circumference. Our online tool simplifies the formula and provides instant results. Visualize the circle and understand the relationship between radius and circumference.
Calculate Circle Radius
Enter the circumference of the circle to find its radius. We use the formula: r = C / (2π), where C is the circumference and r is the radius.
Radius (r):
Visual Representation
Visual representation of a circle with radius and circumference.
Understanding Circle Radius
The radius of a circle is the distance from its center to any point on its circumference. It's half of the diameter. The circumference, on the other hand, is the total distance around the circle. They are related by the formula: C = 2πr. This tool helps you find the radius when you know the circumference, using the rearranged formula r = C / (2π). Understanding radius is fundamental in geometry, engineering, and many aspects of daily life, from designing wheels to calculating areas.
For further reading and more in-depth explanations, you can refer to resources like: