SOLUTION: How long must a guywire be to run from the top of a 18ft pole to a point on the ground 12 feet away? Have have not a clue.

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Question 105229: How long must a guywire be to run from the top of a 18ft pole to a point on the ground 12 feet away?
Have have not a clue.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
There is a right angle triangle.
a=18 b=12 c=?
a^2+b^2=c^2
18^2+12^2=c^2
324+144=468
c^2=468
c=sqrt(468) sqrt of each side.
c=21.63'=21' 5.25"
Ed