Top 10.508

Blue Area = 25 Square cm

X = 10

First Attempt

w = 10 + 8 - l

Green Area = 3 Square Units

No Regression: R = 9.19238815543

Easy Way: R = 9.19238815543 

Ratio of a : b : c = 2 : 3 : 7

Angle DTE = 120°

Rectangle Area = 108

Radius R = 9

Improved: Blue Area = 154 / 17

Blue Area = 154 / 17