Concentration and Density

A city has a population of 8792 people. The area of the city is approximately 6.5 square miles. Approximately, how many people per square mile live in the city?

• 57148

• 208

• 1353

• 135

The area of a city is 77,340 km2 with a population density of 54.7 persons/km2 . The population of this city is_______

• 1,413.89

• 0.0007

• 4,230,498

• 0.07

There are 4,564 horses in Royale Stables. The stables have an area of 789 sq. km. What is the population density of horses in Royale Stables?

• 5.78 horses/sq km

• 0.007 horses/sq km

• 0.17 horses/sq km

• 578 horses/sq km

City A has 9,356,400 people living in it. It's population density is 6,332 people/sq km. What is its area (sq km)?

• 1,477.64 sq km

• 147.76 sq km

• 0.00067 sq km

• 67 sq km

Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g.  

(Hint: find the volume first!)

• 13 g/cm3

• 2 g/cm3

• 10 g/cm3

• 8  g/cm3

If a block of wood has a density of 0.6 g/cm3 and a mass of 120 g, what is its volume?

• 300 cm3

• 200 cm3

• 100 mL

• 150 cm3

Which box has a higher density?

• A

• B

• They both have the same density.

As of 2015, the most densely populated state in the US was New Jersey. The 2015 population was 8,957,907 people and the land area was 7,354 square miles. What is the the population density to the nearest tenth?

• 1218.1 people per sq mi

• 1500 people per sq. mi.

• 325 people per sq. mi.

• 8569 people per sq. mi.

A mechanical pencil has the density of 3.000 g/cm³.  The volume of the pencil is 15.8 cubic centimeters.  What is the mass of the pencil?

• 47.4 g

• 50 g

• 0.190  g

• 5.27 g

d = 24 g/ml

v = 1200 ml

m = ?

• 28800 g

• 50 g

• 0.02 g

• 65 g