SOLUTION: A 3-foot pole casts a shadow of 9 feet. How tall is a tree with a shadow of 12 feet?

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Question 62461: A 3-foot pole casts a shadow of 9 feet. How tall is a tree with a shadow of 12 feet?
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
A 3-foot pole casts a shadow of 9 feet. How tall is a tree with a shadow of 12 feet?
You need to set up a proportion because these are similar triangles.
x%2F12=3%2F9 Notice the heights numerators and the shadows are denominators.
x%2F12=1%2F3 Reduce where you can.
12x%2F12=12%281%2F3%29
x=12%2F3
x=4 ft.
Happy Calculating!!!