context: Wales occupies approximately one-tenth of the total area of ​​the United Kingdom, with an area of ​​20,779 square kilometers (8,020sqmi). [2] Wales' topography is mostly mountainous, only South Wales is less mountainous than North and Central Wales. The main residential and industrial area is located in South Wales, which includes coastal cities such as Cardiff, Swansea and Newport, as well as the South Wales Valleys area to the north of the cities. The highest mountains in Wales are in Snowdonia, including Mount Snowdon (Welsh: Yr Wyddfa), with an altitude of about 1,085 meters (3,560ft) and is the highest peak in Wales. [3] There are 14 (or 15) mountains in Wales which reach 3,000 feet (914 m) in height. These mountains are collectively known as Welsh 3000s. Wales has a coastline of more than 1,200km (750 miles). There are several islands located close to the mainland of Wales; the largest is Anglesey (Ynys Môn) in the northwest.
question: What is the area of ​​Wales?
answers.text: 20,779 square kilometers