Circles Math Example 3

Follow the full solution, then compare it with the other examples linked below.

Example 3

easy
A circle has a diameter of 2020 cm. What is its radius?

Solution

  1. 1
    The radius is half the diameter: r=d2r = \frac{d}{2}.
  2. 2
    Substitute: r=202=10r = \frac{20}{2} = 10 cm.

Answer

r=10ย cmr = 10 \text{ cm}
The radius-diameter relationship r=d2r = \frac{d}{2} is one of the most basic circle properties.

About Circles

The set of all points in a plane at a fixed distance (the radius) from a central point called the center.

Learn more about Circles โ†’

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