Top 10.263

Line Segment BD = X = 14

Shaded = 1.73205080757

Ratio of a / b = 2

Line Segment BF = X = 4 / 5 = 0.8

Baseline CD = X = 21

Green / Red = 1 / 4 = 0.25

Radius R = 12

Green / Mauve = 9 / 4 = 2.25

Mauve / Green = 0.1715729

S = 2 ⇒ Mauve area = 4 / 3