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R=D/2. If the diameter of a circle is 18 inches, the radius is 9 inches. Radius = 1/2 diameter or 9"

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15y ago

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More answers

The radius just means half the diameter. So if the diameter is 22", the radius is 11".

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Wiki User

12y ago
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2*15 = 30 inches

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Wiki User

14y ago
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36

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Anonymous

4y ago
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Q: If the radius of a circle is 15 inches what is the diameter?
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