One end of a guy wire will attach to a telephone pole 10 feet above the ground. The other end of the guy wire will attach to a bracket located 30 feet from the base of the pole. How long of a guy wire is needed?

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Answer 1 · 2016-03-15T16:17:13

I found: #31.6"ft"#

Looking at the diagram:
enter image source here

We can use Pythagoras Theorem to write:
#C^2=A^2+B^2#
#C=sqrt(100+900)=sqrt(1000)=31.6"ft"#