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OpenStudy (anonymous):
helppp Two circles have areas of 16 pi and 25 pi . Find the ratio of their circumferences
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OpenStudy (anonymous):
area of a circle is pi*r^2 . since pi is constant it wont effect the ratio. circumference is 2.pi.r . so lets say the first circle has radius r1 and second one has radius r2. r1^2=25 r2^2=16 you can find r1 and r2 and find the ratios
OpenStudy (solomonzelman):
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