Answer
Acadia National Park has an area of 74 square miles.
Work Step by Step
$1~mi^2 = 640 ~acres$
We can convert 47,453 acres to units of square miles.
$47,453~acres = \frac{47,453~acres}{1}\times \frac{1~mi^2}{640~acres} = 74~mi^2$
Acadia National Park has an area of 74 square miles.
