   # If R is the radius of the quarter-circle on the left and r is the radius of the circle on the right, what is R/r

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In each square, the blue and red areas are equal. If R is the radius of the quarter-circle on the left and r is the radius of the circle on the right, what is R/r posted May 3
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Both are have a same radius answer May 8
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If you complete the first circle it will cover 4 squares, in other words its area will be 4 times of the smaller one, thus R^2=4*r^2 ----> R/r=2 answer May 9

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