Pleasee helpp, I’m so confused, I will mark brainiliest and pleasee don’t use links

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?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16