Things to Know. 1  You must be a Rhode Island resident. 2  You can not have a valid license in Rhode Island or any other state. 3  If you are 59 years of age or older, there is no cost. 4  If you do not have your Social Security card, please contact the Social Security Administration. You must be a Rhode Island resident. 2  You can not have a valid license in Rhode Island or any other state. 3  If you are 59 years of age or older, there is no cost. 4  If you do not have your Social Security card, please contact the Social Security Administration.
For humans, population density is the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers).Commonly this may be calculated for a county, city, country, another territory, or the entire world.f only the Earth's land area of 150 million km 2 (58 million sq. miles) is taken into account, then human population density increases to 47 per km 2 (120 per sq. mile). This includes all continental and island land area, including Antarctica.
Population density is an often reported and commonly compared statistic for places around the world. Population density is the measure of the number people per unit area, commonly represented as people per square mile (or square kilometer). Computing Population Density. To determine an area's population density, you just have to divide an area's total population by the land area in square miles (or square kilometers). For example, Canada's population of 33 million, divided by the land area of 3,559,294 square miles yields a density of 9.27 people per square mile.