title: Navajo County, Arizona
context: According to the U.S. Census Bureau, the county has a total area of 9,960 square miles (25,800km2), of which 9,950 square miles (25,800km2) is land and 9.3 square miles (24km2) (0.09%) is water.[3]
question: How large is Navajo County, Arizona?
answers: 9,950 square miles