Question 1171979
.
<pre>

You have two ways.


The first way is FAST. You may GUESS the answer in 4 seconds:  the length is 20 inches.



The second way is to write this "area" equation for the length x

    x(*(x-7) = 260.


It is a quadratic equation.


Reduce it to its standard form, and then solve

using the quadratic formula or factoring.


You will get the same answer.
</pre>

Solved.


----------


To see many similar solved problems, look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Surface-area/Problems-on-the-area-and-the-perimeter-of-a-rectangle.lesson>Problems on the area and the dimensions of a rectangle</A>

in this site.