Question 1064853
No way to solve without knowing the shape for the garden.  


If the garden is rectangle shape, then look at this lesson:
<a href="https://www.algebra.com/my/FIND-RECTANGLE-DIMENSIONS-USING-GIVEN-PERIMETER-AND-AREA.lesson?content_action=show_dev">Find rectangle dimensions, given perimeter and area:   https://www.algebra.com/my/FIND-RECTANGLE-DIMENSIONS-USING-GIVEN-PERIMETER-AND-AREA.lesson?content_action=show_dev</a>