Top 10.895

X = BCE = 50

Circle Area = 31.4159265359

Blue Quadrilateral Area = 18

Orange Area = 71.712347072

Green Area = 13.3608247423

Shaded = 6 / 13 = 0.461538461538

Yellow Area = 80

X = CD = 10.5 = 21 / 2

Shaded Area = 5.07179676972

7.49193338483 ≤ X ≤ 8