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1. |
A TV tower has a height of 100 m. The average population density around the tower is 1000 per km2. The radius of the earth is \[6.4\times {{10}^{6}}\]m. the population covered by the tower is |
A. | \[2\times {{10}^{6}}\] |
B. | \[3\times {{10}^{6}}\] |
C. | 7.0 m/s |
D. | \[6\times {{10}^{6}}\] |
Answer» D. \[6\times {{10}^{6}}\] | |