20; the diameter of a circle is twice its radius.
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Radius = Diameter/2 so if diameter = 20 Radius = 20/2 = 10
the radius of a circle is half of its diameter.
Radius of circle: 10/2 = 5 feet
Impossible because the diameter of any circle is always twice its radius.
A circle with radius of 3 inches doesn't have a diameter of 10 inches. If the radius is 3, then the diameter is 6, and the circumference is (6 pi) = 18.85 . (rounded) If the diameter is 10, then the radius is 5, and the circumference is (10 pi) = 31.42 . (rounded) The diameter is always double the radius, and the radius is always half of the diameter.