how 40.02 ×10^-8 gets converted to 4.002×10^-7 my question is why 40.02 gets changed to 4.002​​

how 40.02 ×10^-8 gets converted to 4.002×10^-7 my question is why 40.02 gets changed to 4.002​​

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  1. Answer:

    [tex] \: since \: \: 40.02 \times 10 ^{ – 8} = \frac{4002}{10000000000} \\ \\ = \frac{4002}{1000} \times \frac{1}{10000000} \\ \\ \: so \: we \: can \: writeit \: = \: 4.002 \times 10 ^{- 7} [/tex]

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