What is the permiter of a square mile?

Answer 1

The area doesn't tell you the perimeter.

-- If the square mile is inside a circle, then the perimeter (circumference) is 3.545 miles.

-- If the square mile is inside a square, then the perimeter is 4.000 miles.

-- If the square mile is inside rectangle that's 2 miles long and 1/2 mile wide,

then the perimeter is 5.000 miles.

-- If the square mile is inside a rectangle that's 10 miles long and 0.1 mile wide,

then the perimeter is 20.2 miles.

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etc.

The area doesn't tell you the perimeter.