The example was 3 miles. 8” * 3 miles * 3 miles = 72”. Or 6 feet.
= = =
OK, I’m just starting this, but look at the units.
inches x miles x miles ==> length cubed, not just length.
Your 72” is 72 inches-miles-miles.
Have to divide by miles a couple of times to get 72”.
So something is being left out.
I’m pondering. Will be back.
Don't get confused. KISS
First, what is 5 squared? 25. Miles squared solved.
8 inches x 25 = 200 inches
Convert to feet...200 ÷ 12 = 16.67
See 66 for check.