Verified Answer :

\(m-meter\\mm-millimeter\\cm-centimeter\\\\1m=1,000mm\ \ \ (mili=0.001\ of\ some\ unit)\\1m=100cm\ (centi=0.01\ of\ some\ unit)\\1.4m=1.4\times1,000mm=\huge\boxed{1,400mm}\\\\1.4m=1.4\times100cm=\huge\boxed{140cm}\)

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