radius is half the diameter, so 12
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4 feet. The radius is half the diameter.
Diameter is 16. The radius is half its diameter
If the circumference is 128 feet, the radius is 20.37 feet. If the diameter is 128 feet, the radius is 64 feet.
The radius of a circle is half the diameter → radius = ½ × 12 ft = 6 ft.
100. The radius is 1/2 of the diameter.