Memphis, Tennessee is 6.2 times larger than Lafayette, Louisiana.
Area: 138 km2 calculated
Lafayette is a city located along the Vermilion River in southwestern Louisiana. The city of Lafayette is the fourth-largest in the state, with a population of 120,623 at the 2010 census. The combined statistical area of Lafayette–Opelousas-Morgan City was 611,774 according to 2012 estimates. Wikipedia
Area: 849 km2 calculated
Memphis is a city in the southwestern corner of the U.S. state of Tennessee, and the county seat of Shelby County. The city is located on the 4th Chickasaw Bluff, south of the confluence of the Wolf and Mississippi rivers. Wikipedia