Question 272872
Two vertical poles have heights 6 ft and 12 ft. A rope is stretched from the top of each pole to the bottom of the other. How far above the ground do the ropes cross?
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Strangely enough, this is similar to parallel resistors, and parallel flow problems.
They cross at the product over the sum
= 6*12/(6+12) = 72/18
= 4 feet