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30-03-2017
Mathematics

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One circle has a circumference of 12pie cm. another circle has a circumference of 24pie cm. what is the ratio of the radius of the smaller circle to the radius of the larger circle?

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30-03-2017

The radius of the small circle is: r= 12pie/2 = 6pie
The radius of the big circle is: R = 24pie/2 = 12pie
The ratio of the radius is: 6pie/12pie = 1/2

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