Orlando, Florida is 93% larger than Pittsburgh.
Area: 295 km2 calculated
Orlando is a major city in the U.S. state of Florida. Located in Central Florida, it is the county seat of Orange County and the center of the Greater Orlando metropolitan area. Wikipedia
Area: 153 km2 calculated
Pittsburgh is the seat of Allegheny County and with a population of 305,841 is the second-largest city in the U.S. state of Pennsylvania. With a metropolitan CSA population of 2,659,937, it is the largest in both the Ohio Valley and Appalachia and the 20th-largest in the U.S. Wikipedia