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Triangle and two Circles

Angle CAD = X = 12°

Area and Perimeter of ABCD

Radius R = 27 / 2 = 13.5

REVISITED: 2 Circles, 3 Semicircles

MIN = 4. MAX = 4.8

ABCD = 41.5692193817

X = DH = 4.58257569496

Ratio of Blue / yellow = 3

Yellow = 2.2360679775 = √ 5