Answer:
167 million
Step-by-step explanation:
The ratio is 1 million people every 2 years
60%
12/20=0.6
0.6=60%
V = π x r² x h
V= π x 6² x9
V= 324 π
A) 555
555/3 = 185
Check and make sure; 185 x 3 = 555
Hope this helps!
-Jerc