Madagascar is 8.9 times larger than Sri Lanka.
Area: 65,610 km2 World Factbook
Population: 21,866,445 (July 2014) World Factbook
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, is an island country in the northern Indian Ocean off the southern coast of the Indian subcontinent in South Asia. Wikipedia
Area: 587,041 km2 World Factbook
Population: 23,201,926 (July 2014) World Factbook
Madagascar, officially the Republic of Madagascar and previously known as the Malagasy Republic, is an island country in the Indian Ocean, off the coast of Southeast Africa. The nation comprises the island of Madagascar, as well as numerous smaller peripheral islands. Wikipedia