Given the area of 3 triangles S1, S2 and S3 as shown in figure. 
How to find the area of large triangle. ?
For example — if areas given are S1 = 1.0, S2 = 2.0 AND S3 = 3.0
Then Area of large Triangle = 17.19150823
I got this problem on link
How to solve this Geometry Problem
Given the area of 3 triangles S1, S2 and S3 as shown in figure. 
How to find the area of large triangle. ?
For example — if areas given are S1 = 1.0, S2 = 2.0 AND S3 = 3.0
Then Area of large Triangle = 17.19150823
I got this problem on link