The island of Ireland covers an area of 84,421 km2 (32,595.1 sq mi) The commonwealth of Massachusetts covers an area of 27,336 km2 (10,555 sq mi) So, Ireland is slightly more than three times the...
Japan is 377,873 km2, while Australia is 7,686,850 km, making Japan approximately 20 times smaller. Put another way: Japan is slightly larger than the Australian state of Victoria.