Tulsa, Oklahoma is 3.5 times larger than Richmond, Virginia.
Area: 162 km2 calculated
Richmond is the capital of the Commonwealth of Virginia, in the United States. It is the center of the Richmond Metropolitan Statistical Area and the Greater Richmond Region; since 1871 Richmond has been an independent city. Wikipedia
Area: 569 km2 calculated
Tulsa is the second-largest city in the U.S. state of Oklahoma and 46th-largest city in the United States. The population has grown since the 2010 census, With a population of 398,121 as of July 2013. Wikipedia