Let's assume
shorter side as x
so, first side =2x
third side =x+19
now, we can find perimeter of triangle
perimeter of any triangle is
first side + shortest side + third side
so, we get
[tex]P=2x+x+x+19[/tex]
we are given perimeter=187
so, we can set it to 187
and then solve for x
[tex]187=2x+x+x+19[/tex]
[tex]187=4x+19[/tex]
[tex]4x+19-19=187-19[/tex]
[tex]4x=168[/tex]
[tex]x=42[/tex]
so,
shortest length is x=42 feet
First side =2x=2*42=84feet
third side =x+19=42+19=61 feet
so, dimensions are
first side is 42 feet
second side is 84 feet
third side is 61 feet................Answer