<PRE><B>Question 995426</B>
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Two poles, A and B, are 12 meters apart. Pole A is 5 meters high. A rope 20 meters long is tied to the top of pole A and stretches to the top of pole B. 

What is the height of pole B? Assume that pole B is taller than pole A.
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Height(B) = Height(A) + x, where


x = {{{sqrt(20^2 - 12^2)}}} = {{{sqrt(400 - 144)}}} = {{{sqrt(256)}}} = 16.


Height(B) = 16 + 5 = 21 meters.





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