Task 1439
Task 1439: development task in emrekuruu/math-openenv, an RL environment on the Hugging Face Hub. Find the area of the triangle with vertices $(6,5,3),$ $(3,3,1),$ and $(15,11,9).$
The task
Find the area of the triangle with vertices $(6,5,3),$ $(3,3,1),$ and $(15,11,9).$