Question 1013378
The description is not clear.   Is the path inside the garden or outside the garden?  Once you know which kind, you can use either or both of these video presentations for help:


<a href="https://youtu.be/lM-Vkn9qMaI">outside border of uniform width, rectangle</a>


<a href="https://youtu.be/6FmL8uC3tyE">inside border of uniform width, rectangle</a>