28
diameter = 2 X the radius
2 X 14 = 28
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A circle 14 inches in diameter has a radius of 7 inches, and a circle having a radius of 7 inches has a diameter of 14 inches.
Diameter is twice the radius=14"
radius= 7
You mean radius. The radius is half the height of a circle. The diameter is the full height. So, you would add 14 to itself.Therefore, the diameter of the circle is 28 inches.
The radius is half of the diameter. So, if the radius is 7 the diameter is 14.