Top 10.428

a / b = c / d = 1.17008648663

Radius R = 5.472135955

Proof: X ² = a ⋅ b

Total Area = 32 Square Units

X = 75°. Y = 60°

Blue Area / Yellow Area = 1

Green / Blue = 5 / 6

Blue Area = ( 100 / 3 ) cm ²

Blue Area = 18.933982822

Blue Area = 30 cm ²