Posted by **esther** on Monday, March 28, 2011 at 11:03pm.

Guy wire. How long is a guy wire reaching from the top of a 21ft pole to a point on the ground 14 ft from the pole?

Thank you.

- algebra 2 -
**meaj**, Tuesday, March 29, 2011 at 12:13am
28ft (27.784887978899609016865094082057ft to be exact)

- algebra 2 -
**Jai**, Tuesday, March 29, 2011 at 10:24am
since when this is drawn it forms a right triangle, we use pythagorean theorem:

c^2 = a^2 + b^2

where

c = hypotenuse

a and b are base and height of the triangle

therefore:

c^2 = 14^2 + 21^2

c = sqrt (196 + 441)

c = 25.24 ft

hope this helps~ :)

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