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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 is the volume of this container?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.