Top 10.963

Pink Triangle Area = 10

Angle EDF = 90

Simplified / Improved

[ ABC ] = 24

X = BM = 5

Red Area = [ AEO ] = 42 / 25

Square Side s = 16

[ ABC ] = 39

Shaded Square Area = 15

Circle Radius R2 = 2

Shaded Area = 6.28318530718