Step-by-step explanation:
look to the picture of my answer.
Point G cannot be a centroid because GE is wider that JG or JG is shorter than GE. So in this diagram GE is wider than JG with 10 cm and 5 cm respectively based on this information Point G cannot be a centroid of triangle HJK. So the answer is point G cannot be a centroid because JG is shorter than GE.

That's about as much as you can simplify this problem.
I hope this helps! :)
Answer:
its the first one and its 3.24