The areas of 10 cities are given in the table.

How much greater is the range for the cities in the south than the cities in the north?


Enter your answer in the box.


mi²

Northern Cities Southern Cities
Chicago 234 mi² Houston 627 mi²
Milwaukee 97 mi² New Orleans 350 mi²
Madison 85 mi² Phoenix 517 mi²
Detroit 143 mi² Memphis 324 mi²
Minneapolis 58 mi² Atlanta 132 mi²