Question: What is the population of this capital and most populous city of Ghana, where Radford University College is located?
Context: Penelope W. Kyle is a former president of Radford University, a public, state-funded, comprehensive university, located in the city of Radford, in southwestern Virginia.  She assumed her role on June 1, 2005, and she retired from the position in June 2016. Radford University is a co-educational public university located in Radford in the U.S. State of Virginia.  It is one of the state's eight doctorate-granting public universities.  Founded in 1910, Radford offers curricula for undergraduates in more than 100 fields, graduate programs including the M.F.A., M.B.A., M.A., M.S., Ed.S. , Psy.D. , M.S.W., and specialized doctoral programs in health-related professions. The Patrick D. Cupp Stadium (usually called Cupp Stadium) is a multi-use stadium located in Radford, Virginia on the campus of Radford University. The Tartan is a student run newspaper published weekly for readers in and around Radford University in Radford, Virginia.  Its staff works throughout the week to provide the students and faculty of Radford University, as well as the residents of the surrounding city of Radford, with news pertaining to the University and surrounding community.  The paper is circulated every Wednesday afternoon, and is the most widely circulated publication in the town of Radford.  First published in January 1921. The 2013–14 Radford Highlanders men's basketball team represented Radford University during the 2013–14 NCAA Division I men's basketball season.  The Highlanders, led by third year head coach Mike Jones, played their home games at the Dedmon Center and were members of the North Division of the Big South Conference.  They finished the season 22–13, 10–6 in Big South play to finish in third place in the North Division.  They advanced to the quarterfinals of the Big South Conference Tournament where they lost to UNC Asheville.  They were invited to the College Basketball Invitational where they defeated Oregon State in the first round before losing in the quarterfinals to Old Dominion. State Route 177 (SR 177) is a primary state highway in the U.S. state of Virginia.  The state highway runs 4.41 mi from Interstate 81 (I-81) near Radford north to U.S. Route 11 (US 11) in Radford.  SR 177 directly connects I-81 with the eastern part of the independent city of Radford, including Radford University. The New River Valley rivalry is a crosstown college sports rivalry between the Radford Highlanders of Radford University and the Virginia Tech Hokies of the Virginia Polytechnic Institute and State University.  Both universities lie within the New River Valley of the Blue Ridge Mountains, and both main campuses are separated by only 12 miles. The 2014–15 Radford Highlanders men's basketball team represented Radford University during the 2014–15 NCAA Division I men's basketball season.  The Highlanders, led by fourth year head coach Mike Jones, played their home games at the Dedmon Center and were members of the Big South Conference.  They finished the season 22–12, 12–6 in Big South play to finish in a three way tie for third place.  They lost in the quarterfinals of the Big South Tournament to Winthrop.  They were invited to the College Basketball Invitational where they Delaware State in the first round before losing in the quarterfinals to Vermont. Accra is the capital and most populous city of Ghana, with an estimated urban population of 2.27 million as of 2012 .  It is also the capital of the Greater Accra Region and of the Accra Metropolis District, with which it is conterminous.  Accra is furthermore the anchor of a larger metropolitan area, the Greater Accra Metropolitan Area (GAMA), which is inhabited by about 4 million people and is the thirteenth-largest metropolitan area in Africa. The University is located on the Lagos Avenue at East Legon in Accra, Ghana.
Answer: 2.27 million