Top 10.561

Angle BAC = 21°

Blue Area = 48

X = BAD = ACD = 42°

Simplified and Improved

Radius R = 10

Missing Angle MAJ = 15°

Orange Area = 56.5685424949

a = 6 and b = 10 ⇒ EF = 4

R = 1.61803398875

PQ = 2 X = 5.65685424949

Solution = 12.125