Radius = Diameter/2 so the radius of a "a" is 4 inches.
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The radius is one half the diameter so if the diameter is 8 inches then the radius is 4 inches.
4 inches. The radius = 1/2 of the diameter
four inches
Radius of circle: 8/2 = 4 inches
The radius is 1/2 the diameter. So, since the diameter is 8 the radius of the circle would be 4.