Question 998707
Check this lesson for finding such dimensions, designed for questions like yours.


<a href="http://www.algebra.com/my/FIND-RECTANGLE-DIMENSIONS-USING-GIVEN-PERIMETER-AND-AREA.lesson?content_action=show_dev">http://www.algebra.com/my/FIND-RECTANGLE-DIMENSIONS-USING-GIVEN-PERIMETER-AND-AREA.lesson?content_action=show_dev</a>


"Sum of adjacent sides of a rectangle"  is the same as "perimeter".