Two people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting

Acylinder has volume 45π and radius 3. what is it’s height?

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?

What’s -11-33k and factor each expression completely