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16-02-2018
Mathematics

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If the diameter of a circle changes from 18 cm to 6 cm, how will the circumference change?

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16-02-2018

The circumference when the diameter is 18 = 18pi

The circumference when the diameter is 6 = 6pi

18pi/6pi=3

The circumference will become a third of what it was.

Hope this helps!

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