Answer:
15.19 feet
Step-by-step explanation:
We are given a right angled triangle.
Hypotenuse = 16 feet
Base = 5 feet
Now we are supposed to find the perpendicular of given triangle.
So, we will use Pythagoras theorem.
\(Hypotenuse^2=Perpendicular^2+Base^2\)
\(16^2=Perpendicular^2+5^2\)
\(256=Perpendicular^2+25\)
\(256-25=Perpendicular^2\)
\(231=Perpendicular^2\)
\(\sqrt{231}=Perpendicular\)
\(15.19=Perpendicular\)
Hence the measure of the third side is 15.19 feet.
