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User Kanwal
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Determine the height upto which ladder reach by using trigonometry.


\begin{gathered} (14)^2=(4)^2+(l)^2 \\ 196-16=l^2 \\ l=\sqrt[]{180} \\ =13.41 \\ \approx13.4 \end{gathered}

So answer is 13.4 feet.

User Zonella
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