THE HEIGHT OF THE TREE IS __?__ FEET (SIMPLIFY YOUR ANSWER)?

TO ESTIMATE THE HEIGHT OF A TREE A FORESTER USES THE CONCEPT OF SIMILAR TRIANGLES A PARTICULAR TREE IS FOUND TO HAVE A SHADOW MEASURING 87 FEET IN LENGTH THE FORESTER HAS HER OWN SHADOW MEASURED AT THE -SAME TIME HER SHADOW MEASURES 7 1/2 FEET IF SHE IS 4 1/2 FEET TALL HOW TALL IS THE TREE