Answer:
3 +9 does not belong because it doesn't equal 10 like the rest of them do.
If:
Circumference, C = 3 cm
Then:
Radius, r = 0.47746482927569 cm
Diameter, d = 0.95492965855137 cm
Area, A = 0.71619724391353 cm
36-12=24
The answer is:
12;24 or 1;2 (simplified)
1,000c + 40,000 = 60,000
solve:
c = 20 cars
