1)   5 ч = ......с 21600 с = .......ч
7 ч =......с
46800 с = .......ч




2)   Вырази в новых единицах измерения.
36 кг = г
2 ч 10 мин = мин 
92 м = дм 
3 т 4 ц = кг
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