6th Grade Solving for Arched 2D Areas: Problem 2

Problem: As shown the radius of the large circle is equal to the diameter of each of the four smaller identical circles. If the shaded areas is labeled as S_1, and the unshaded areas is labeled as S_2, then what is the ratio between these two areas? (π=3.14)

Key: Can you shift or change some of the ways the irregular shapes are placed so that it's easier to solve their area?

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