<em>The word usage in last sentence of the question is not well presented. However, I can understand that you intend to solve for the width of the park</em>
Answer:

Step-by-step explanation:
Given


Required
Determine the Width
For a rectangle:

Substitute for Area and Length

Multiply both sides by 





Given:
Product of two numbers is 24
Sum of two numbers is -11
-8 and -3 are the two numbers.
Answer:
Step-by-step explanation: