Answer:
The width of the rectangular space = 3/2 miles .
Step-by-step explanation:
The area of the rectangular space = 1/2 sq miles.
The length of the rectangular space = 1/3 miles
The width of the rectangular space = k miles
Now, AREA OF THE RECTANGLE = LENGTH x WIDTH
⇒ 
or, k = 3/2 miles
Hence the width of the rectangular space = 3/2 miles