Arkansas (USA) is 759 times larger than Washington, D.C..
Arkansas is a state located in the Southern region of the United States. Its name is of Siouan derivation, denoting the Quapaw Indians. The state's diverse geography ranges from the mountainous regions of the Ozark and the Ouachita Mountains, which make up the U.S. Wikipedia
Area: 178 km2 calculated
Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. Wikipedia