Poland is 6.4 times larger than Slovakia.
Area: 312,685 km2 World Factbook
Population: 38,346,279 (July 2014) World Factbook
Poland, officially the Republic of Poland, is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine and Belarus to the east; and the Baltic Sea, Kaliningrad Oblast and Lithuania to the north. Wikipedia
Area: 49,035 km2 World Factbook
Population: 5,443,583 (July 2014) World Factbook
The Slovak Republic is a sovereign state in Central Europe. It has a population of over five million and an area of about 49,000 square kilometres. Slovakia is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south. Wikipedia