Answer:
b = 5/4 miles
Step-by-step explanation:
Length of a rectangular playground, l = 1/2 miles
Area of the playground, A = 5/8 square miles
We need to find the width of the playground. We know that, the area of a rectangular shape is given by :
A = l×b, here b is the width of the playground.
[tex]b=\dfrac{A}{l}\\\\b=\dfrac{\dfrac{5}{8}}{\dfrac{1}{2}}\\\\b=\dfrac{5}{4}\ \text{miles}[/tex]
So, the width of the playground is 5/4 miles.