Answer:
13,099.6 square miles
Explanation:
80%*65,498=
80/100 * 65,498=
4/5 * 65,498=52,398.4 square miles of land area
65,498-52,398.4= ==> subtract the total area of Wisconsin by the total land area to get the total area that isn't land.
65,498.0-52,398.4=13,099.6 square miles of area that isn't land