How to Calculate the Radius from Circumference Easily
Learn the simple formula to find the radius from the circumference of a circle. Perfect for math enthusiasts and students!
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To find the radius given the circumference, use the formula: radius = circumference / (2 * π). For example, if your circumference is 31.4 units, divide 31.4 by approximately 6.28 (since 2 * π ≈ 6.28). The radius would be 5 units. This formula helps you quickly and accurately find the radius from the circumference measure.
FAQs & Answers
- What is the formula for radius from circumference? The formula is radius = circumference / (2 * π), where π is approximately 3.14.
- How do I use the circumference to find the radius? Simply divide the circumference by roughly 6.28 to calculate the radius.
- What if I only have the radius? If you have the radius, you can find the circumference using the formula circumference = 2 * π * radius.
- Why is understanding radius and circumference important? It's essential for solving problems in geometry, physics, and engineering, as these concepts are foundational in many applications.