Question

converter 200 cm em km

Answer 1

$1m=100cm=10^2cm\\1km=1000m=1000.1m=[10^3][10^2cm]=10^5cm\\\\\frac{1km}{x}=\frac{10^5cm}{2.10^2cm}\\\\x=\frac{[1km]2.10^2cm}{10^5cm}=2.10^2[10^{-5}]km=\boxed{2.10^{-3}km=0,002km}$