The radius of a circle is equal to half of it's diameter. To convert the diameter into the radius, simply divide it by two.
For example: if the diameter is 10, then the radius would be 5
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The diameter of a circle is twice the radius. A radius is half of a diameter.
The radius of a circle is half of its diameter. Therefore, if the diameter of the circle is 60 inches, the radius would be half of 60, which is 30 inches. The formula to find the radius from the diameter is: radius = diameter / 2.
The diameter is (the circumference) divided by (pi) . The radius is 1/2 of the diameter.
Radius = diameter/2 = 5 cm
A radius is half of the diameter of a circle or a sphere. Scroll down to related links and look at "Diameter - Wikipedia" or "Radius - Wikipedia"