Carcass wrote:
Attachment:
#greprepclub By approximately how many square miles did the area.png
By approximately how many square miles did the area of the United States increase from 1800 to 1900?
A. 360,000
B. 2,000,000
C. 3,625,000
D. 20,000,000
E. 36,250,000
Kudos for the right answer and explanation
Mathematical relation between Population (P) , Population/ square mile (PPSM) and Area (A, in square miles )
PPSM * A = P
Therefore A = P/PPSM
For 1980
A = 5.3/6.1
approximately (5/ 6) Million
For 1990
A = 76/25.6
approximately 3 Million
Therefore increase (3 - (5/6)) Million
(13/6) * 10,00,000
approximately 20,00,000