Top 10.570

X = BDE = 10°

CO = 15

X = EM = 5 / 3

 

Yellow = 45 Square Units

Simplified and Improved

X = 0.814814814815 = 22 / 27

X = ABD = 75°

X = CED = 60°

X = ADE = 40°

Solution = 13

Blue Area = 0.433012701892