Thousands of People

Age 14 to 16 Challenge Level:


Town Radius Area Population (nearest hundred)
A 1 $\pi$ 1000
B 1.7 $2.89 \pi$ 2900
C 4.5 $20.25 \pi$ 20000
D 7 $49 \pi$ 49000
E 2.4 $5.76 \pi$ 5800
F 0.7 $0.49 \pi$ 500

If the diagram represented the populations using radius rather than area, the populations would be as follows:
A 1000
B 1700
C 4500
D 7000
E 2400
F 700

Most people's estimates should match more closely to the area figures than the radius ones.