Top 10.364

CDF ≥ 90° ⇒ BEF = 60°

Angle ADB = X = 40°

Angle AEB = X = 60°

Angle DFE = X = 105°

tan α = 3 / 4 = 0.75

Blue Area = 1 / 10 = 0.1

Square = 72 Square Units

Shaded Fraction = 1 / 3

Yellow = 1 ⇒ Green = 24

Red Area = 0.774596669241