SOLUTION: A billboard is 27 feet high and casts a 36-foot shadow. At the same time,a cell-phone tower to the billboard casts a 72-foot shadow. Which proportion can be used to find height. H,

Algebra ->  Geometry-proofs -> SOLUTION: A billboard is 27 feet high and casts a 36-foot shadow. At the same time,a cell-phone tower to the billboard casts a 72-foot shadow. Which proportion can be used to find height. H,      Log On


   

Question 429288: A billboard is 27 feet high and casts a 36-foot shadow. At the same time,a cell-phone tower to the billboard casts a 72-foot shadow. Which proportion can be used to find height. H,of the cell-phone tower?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
27/36=h/72
36h=1944
h=54 ft