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RV-11-001 · Standard form, area conversion and density

A region has population 5.6×1065.6\times10^6 and area 3.1×1073.1\times10^7 m². Its population grows by 15% while its area stays the same. Work out its new population density, in people per km², to the nearest whole number.

Standard Form, Area Unit Conversion & Density Booklet p. 41, p. 44 & p. 54
Method
1) Convert m² to km² by dividing by 1000² = 10⁶
2) Multiply population by (1 + %/
1
0
0)
3) Population density = New population ÷ Area in km²
Worked Example (RV-11-001)
1)
Convert square metres to square kilometres by dividing by 10610^6.
2)
Area = 31 km².
3)
New population = 6439999.
4)
Divide the new population by the area in km².
5)
207742 people/km²
Ans = 207742 people/km²