Question 1183980
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<pre>

The perimeter is the sum of all sides


   455 = 3x + 1.5x + 180 + x


which is the same as


    455 = 5.5x + 180,

    455 - 180 = 5.5x

      275     = 5.5x

        x     = 275/5.5

        x     = 50 ft.


Therefore, one side is 3*50 = 150 ft;  other side is  1.5*50 = 75 ft;  the last side is  50 ft.    <U>ANSWER</U>
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Solved and explained.