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Humans have 1014 cells at a diameter of 0.01 mm each. If they were placed in a line, how many times around the Earth would they go? The radius of the Earth is 6.38 x 106 m.
Answer: 1014 x 0.01 x 10-6 m = 1 x 106m
Circumference = 2 x 3.14 x 6.38 x 106 = 4.0 x 107 m; No. of times = 40.
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