Finding the radius of a circle is easier than you might think. Here are the steps you can follow:

  • Measure the diameter of the circle. You can do this using a ruler or a measuring tape.
  • Divide the diameter by 2 to get the radius. For example, if the diameter is 10 cm, the radius will be 5 cm.

If you know the circumference instead, use this formula:

  • Divide the circumference by 2π (approximately 6.28). For instance, if the circumference is 31.4 cm, the radius is 31.4 / 6.28 = 5 cm.

For more information on circle geometry, visit Khan Academy.

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