look at picture and a explan would be nice to if possible

Answer:
79200 squared feet
Step-by-step explanation:
we first need to pass from 3 miles to feet
so
[tex]3miles(\frac{5280feet}{1mile} )=3(5280feet)=15840feet[/tex]
so now we can multiply width and length
[tex]5*15840=79200[/tex] squared feet