The mean lunar diameter is 2.16*103 miles.
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200,000 in Scientific Notation = 2 x 105
In a vacuum, light travels about 3,725,648 miles every 20 seconds. In scientific notation this distance is expressed as: 3.725648 x 106 miles per 20 seconds.
Using scientific notation reduces the need to write out very large or very small numbers as the following examples show:- 1,000,000,000,000 = 1.0*1012 in scientific notation 0.0000000001 = 1.0*10-10 in scientific notation
The point of using scientific notation is to compute very large or very small numbers.
0.0000072 in Scientific Notation = 7.2 x 10-6