Question

as of mid-2016, the worlds population was about 7.4 billion people. the population of the united states was 324 million. the area of a certain city is 607 square miles. if in mid 2016 every person in the world moved into that city, how many square feet of space would each person have? nothe there are 5280 feet in a mile. first determine how many square feet are in a mile. round your answer to one decimal place

Answer 1

Answer : 1.3 sq ft

Explanation : First we have to convert, feet into miles;

5280 ft = 1 mile;  

1 sq mile = 5280 X 5280 sq ft  

Area of new york city = 305 sq mile

So, on multiplying it with the sq ft we get;

= 305 X 5280 X 5280 sq ft

If every person in the world moves to New york city i.e. $6.7 X 10^{9}$ people move ,

Area per person = 305 X 5280 X 5280/ $(6.7 X 10^{9})$ sq ft

= 1.27 sq ft which is approximate 1.3 sq ft

Answer 2

Answer: 2.3 square feet

Step-by-step explanation:

Given : As of mid-2016,The worlds population was about 7.4 billion people.

Since 1 billion = $=1000,000,000=10^9$

The area of a certain city is 607 square miles.

If in mid 2016 every person in the world moved into that city.

Then, the square miles of space each person would have will be :

$=\dfrac{\text{Area of city}}{\text{World's Population in 2016}}\\\\=\dfrac{607}{7.4\times10^9}\\\\=\dfrac{607}{74}\times10^{-8}$

Also, One mile = 5280 feet

Then,  the square feet of space each person would have will be :

$\dfrac{607}{74}\times10^{-8}\times5280\times5280\\\\=2.28678227027\approx2.3$

Hence, each person would have 2.3 square feet of space.