query: What is the size of Japan by area?
passage: Geography of Japan
Japan is an island nation comprising a stratovolcanic archipelago over 3,000km (1,900mi) along East Asia's Pacific coast.[5] It consists of 6,852 islands.[6] The main islands are Honshu, Kyushu, Shikoku and Hokkaido. The Ryukyu Islands and Nanpō Islands are south of the main islands. The territory extends 377,973.89km2 (145,936.53sqmi).[1] It is the largest island country in East Asia and fourth largest island country in the world. Japan has the sixth longest coastline 29,751km (18,486mi) and the eight largest Exclusive Economic Zone of 4,470,000km2 (1,730,000sqmi) in the world.[7]
passage: Nagoya
The area is . Its metropolitan area extends into the Mie and Gifu prefectures, with a total population of about 10 million people, surpassed only by Osaka and Tokyo.