Answer
Guy wire length $=52.2\; ft$.
Work Step by Step
Draw a line diagram as shown in the image file.
Use the Pythagoras theorem.
Guy wire length $=\sqrt{(50.0\; ft)^2+(15.0\; ft)^2}$.
Simplify.
Guy wire length $=\sqrt{2500\; ft^2+225\; ft^2}$.
Add.
Guy wire length $=\sqrt{2725\; ft^2}$.
Take square root.
Guy wire length $=52.2\; ft$.
