Respostas

2014-03-06T17:54:42-03:00
Resposta

1um = 1.10⁻⁶m = 1.10⁻⁹km

1km

1 / 1.10⁻⁹ = 1.10⁹ = 1000000000km

1um = 1.10⁻⁴cm =  0,0001cm 
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