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Blue Area = 405 / 13

a / b = 1.41421356237 = √ 2

Proof: x ² = ab

GHN = 45°. Ratio of a / b = 3

Black Points are Collinear

Pink Fraction = 0.04 = 1 / 25

Blue Area = 16 Square Units

X = CD = 1

X = AC = 55

Radius R = 5 / 7