Math help- Please help me answer the question below, I will give brainliest thing to whoever helps and gets it correct, thank you!

What is the size of the matrix resulting from

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Can some one explain this i got sent this. is this a threat i’m scared