The radius of a circle can be calculated in a few different ways, depending on the information you have available.
Methods to Calculate the Radius
Here's a breakdown of common methods:
1. Using the Diameter
- Formula: Radius = Diameter / 2
- If you know the diameter of the circle, simply divide it by 2 to find the radius.
- Example: If the diameter is 24 units, the radius is 24 / 2 = 12 units.
2. Using the Circumference
- Formula: Radius = Circumference / (2π)
- If you know the circumference of the circle, divide it by 2π (approximately 6.283) to find the radius.
Summary Table
| Given Information | Formula | Example |
|---|---|---|
| Diameter | Radius = Diameter / 2 | Diameter = 24, Radius = 24 / 2 = 12 |
| Circumference | Radius = Circumference / 2π | N/A |
