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Transformați : 1). 30 g (grame) = ? Kg (kilograme)
2). 618 hg (hectograme) = ? Kg (kilograme)
3). 21,4 hg (hectograme) = ? g (grame)
3h 25 min 15 s = ? s


Răspuns :

30g=0,030 kg
618hg=61,8 kg
21,4 hg=2,14kg
3h 25 min15s= 3×3600+25×60+15= 12315 s