Question 1149520
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<U>ANSWER</U> :   L = 65 ft;  W = 20 ft.



<U>Solution</U>


<pre>
It is easy to guess: this pair (65,20) is unique giving the product of 1300 and the sum of 65+20 = 85, half of the perimeter.



It is also easy to get solving the quadratic equation

    W*(85-W) = 1300,

where 85 ft is half of the perimeter  {{{170/2}}} ft.
</pre>

Solved and explained.  And completed.