Question: What is the area of this Spanish autonomous city, sharing a border with Africa and has places of sovreignity off its coast?

Context paragraphs:
Tingitana Peninsula: The Tingitana Peninsula, also known as the Tangier Peninsula, is a small peninsula in northwest Africa, which together with the Iberian Peninsula, southernmost part of mainland Spain, forms the Strait of Gibraltar, the Atlantic Ocean boundary with the Mediterranean Sea.  The principal cities are Tangier, Tétouan and Ceuta.  Administratively, the peninsula belongs to the Moroccan prefectures of Tangier-Asilah Morocco, Fahs Anjra, M'Diq-Fnideq and Tetuan, and the Spanish autonomous city of Ceuta.  Historically it belonged to the province of Mauritania Tingitana.

Ceuta Heliport: Ceuta Heliport (Spanish: "Helipuerto de Ceuta" ) (ICAO: GECE) is the heliport, and only air transport facility, serving the Spanish autonomous city of Ceuta, in North Africa.

Caballas Coalition: The Caballas Coalition (Spanish: "Coalición Caballas" ) is a left-wing regionalist party in the Spanish autonomous city of Ceuta in north Africa.

Movement for Dignity and Citizenship: The Movement for Dignity and Citizenship (Spanish: "Movimiento por la Dignidad y la Ciudadanía" ) is a left-wing autonomist party in the Spanish autonomous city of Ceuta (north Africa).

Transport in Melilla: Melilla is a Spanish autonomous city, located in the north coast of Africa.  It has an airport, a port and roads.

Ceutan Assembly election, 2011: The 2011 elections to the Ceuta Assembly were the fifth elections to the unicameral regional legislature of the Spanish autonomous city of Ceuta.  The elections were held on 22 May 2011 to elect the 25 members of the Assembly.

Geography of Spain: Spain is a country located in southwestern Europe occupying most (about 85 percent) of the Iberian Peninsula and includes a small exclave inside France called Llívia as well as the Balearic Islands in the Mediterranean, the Canary Islands in the Atlantic Ocean 108 km off northwest Africa, and five places of sovereignty ("plazas de soberanía") on and off the coast of North Africa: Ceuta, Melilla, Islas Chafarinas, Peñón de Alhucemas, and Peñón de Vélez de la Gomera.

Ceuta: Ceuta (assimilated pronunciation , also ; ] ; Arabic: سبتة, "Sabtah") is an 18.5 km2 Spanish autonomous city on the north coast of Africa, separated by 14 kilometers from Cadiz province on the Spanish mainland by the Strait of Gibraltar and sharing a 6.4 kilometer land border with M'diq-Fnideq Prefecture in the Kingdom of Morocco.  It lies along the boundary between the Mediterranean Sea and the Atlantic Ocean and is one of nine populated Spanish territories in Africa and, along with Melilla, one of two populated territories on mainland Africa.  It was part of Cádiz province until 14 March 1995 when both Ceuta and Melilla's Statutes of Autonomy were passed, the latter having been part of Almeria province.

Melilla: Melilla ( ; ] , ] ; Berber: ; Arabic: ‎ ‎ , "Maliliyyah") is a Spanish autonomous city located on the north coast of Africa, sharing a border with Morocco, with an area of 12.3 km2 .  Melilla, along with Ceuta, is one of two permanently inhabited Spanish cities in mainland Africa.  It was part of the Province of Málaga until 14 March 1995, when the city's Statute of Autonomy was passed.

Ceuta (disambiguation): Ceuta is a Spanish autonomous city located to the south of the Strait of Gibraltar, in North Africa.

Supporting paragraphs: Geography of Spain Melilla
Answer: 12.3 km2