### Home > CC4 > Chapter 1 > Lesson 1.2.3 > Problem 1-63

1-63.

The District of Columbia has a very high population density. There are

Calculate the unit rate in terms of people per square mile for the District of Columbia. Make sure the precision of your answer is reasonable.

The problem indicates the rate is to be in terms of

**people**per**square mile**.This indicates a division problem.

people per square mile. But is this amount of precision

*reasonable*?

**Probably not!**

We should round our answer to the nearest whole person:people per square mile. Alaska is

square miles in area. If Alaska had the same population density as the District of Columbia, how many people would live in Alaska? Each square mile would have a population density of

people.