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If a central angle of 90 degrees defines an arc on circle R that has the same length as the arc on circle W defined by a 120-degree central angle, what is the ratio of the area of circle R to the area of circle W? Express your answer as a common fraction.

 Dec 3, 2020
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Arc Length = [90 x pi/180 x R] =[2*120 x pi/180 x W], solve for R/W
R/W = 4/5 - ratio of the area of circle R to circle W

 Dec 5, 2020

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