Top 10.913

IP = 1.97204829827

Radius R = 5

Height DE = 10.5830052443

Parallelogram Areal = ?

Triangle ABC Area = 24

X = ADB = 30

BD = 3.46410161514

Shaded Area = 24

Easy Way

Triangle ABE Area = 24

Top 10.912

Shaded Area = 24.8778986464

X = AD = 4

Orange Area = 39.3296611698

Missing Angle BAC = 30

Square ABCD Area = 2

Solution = 18

Square ABCD Area = 180

X = DE = 3.60555127546

Angle ACD = 15

Yellow Area = 5.59119022502

Top 10.911

Green Rectangle Area = 20

Radius R = 4.74341649025

X = DE = 2

X = CBP = 17

Shaded Triangle Area = 20

Blue Square Area = 36

Angle AFD = 135

Orange Area = 30.4229809241

Orange Area = 18.5811559264

Circle in Semicircle ( Newer )

Top 10.910

Radius R = 2.2360679775

Pink Area ? 16 + 12 = 28

Shaded Area = 14

Angle ABC = 75

Radius R = 7.07106781187

X = BC = 2

Shaded Area = 23.8088526306

X = Angle ACB = 22.5

Mathematical Proof

X = Angle EFG = 135

Top 10.909

Angle BAC = 60

X = 15

Shaded Area = 9

X = Angle ABC = 75

X = ABP = 18

Angle BCD = 6

Shaded Area = 4

X = 5.85640646055

Circle Radius R1 = 3

Shaded Area = 18

Top 10.908

Angle ACB = 73

Mathematical Proof

Solution = 9 / 35 = 0.36

AB / BC = 2

X = DK = 7

Green Area = 64.5354207717

Red Area = 3.14159265359

X = Angle CAD = 20

X = AE = 2

Angle BAC = 60