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The diameter is always double the radius so in this case, it is 18cm

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โˆ™ 2015-11-16 21:56:52
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โˆ™ 2015-11-17 07:07:18

The circle diameter is twice its radius. Accordingly it equals 2 x 9 = 18 centimeter

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Q: If a circle has a radius of 9 cm how long is the circle's diameter?
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