Top 10.101

Angle AED = X = 48°

F₁ = 15 ⇒ BD = BE + 4 = 16

R = 20 ⇒ Orange Area = 100 π

Ratio = CH / R = 4

X = DP = 3.79795897113

Alpha = α = 27.8855668361

Angle ABD = X = 85°

AB / BC = 1.70710678119

Angle ABF = 60

Angle BCD = 80