Top 10.831

Circle Area = 51.0508806208

Yellow Area = 1.5

BC / BD = 48

Shaded Fraction = 5/16 = 0.3125

Orange Area = 24.7640740605

X = ADB = 30 = AOB / 2

Pink Area = 15 Square Units

Red Area = 16.2 = 81 / 5

Radius R = 10.2989574693

X = DBF = 45