Question

4.in a recent year, the population of california was about 2.52x10^7 people. its land area is about 4.05x10^5 km^2. what was the average number of people per square kilometer?

0.62x10^5
6.2x10^1
0.62x10^14
6.2x10^9

Answer 1

1.d

2.a

3.c

4.b

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Answer 2

As given;

2.52x10^7 people are living in 4.05x10^5 km^2 area. then for 1km^2, the number of people can be calculated as:
people in 1km^2 = (2.52x10^7) / (4.05x10^5)
=0.62x10^2
or
=6.2x10^1