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04-03-2017
Mathematics

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tzarplatypus tzarplatypus

04-03-2017

The formula for the area of a circle is
A=(pi)r^2. You are given the diameter. To find the radius (r) divide the diameter in half so18/2=9. Plug the radius into the formula to get your answer A=(3.14)9^2
A=254.34cm^2

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