Question

New York City has a population of 8.55 million and 300 square mile. Manhattan has 1.64 million and 23 square miles. How much greater is the population of Manhattan than New York City?

Answer 1

Given :

New York City has a population of 8.55 million and 300 square mile area .

Manhattan has 1.64 million and 23 square miles area .

To Find :

How much greater is the population density of Manhattan than New York City.

Solution :

Population density of New York City :

`D_(NY)=(8.55)/(300)=0.029 \ million/mile^2\\\\D_(M)=(1.64)/(23)=0.071 \ million/mile^2`

Now ,

`D_(M)-D_(NY)\\\\(0.071-0.029)=0.042\ million/miles^2`

Therefore , population density of Manhattan is
`0.042\ million/miles^2` greater than New York City .

Hence , this is the required solution .