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1t=1000kg
1/2 *1/2 *1000kg=1/4 *1000kg=250kg falsz
2.
1t=1 000 000g
1kg=1 000 g
1dag=10g
1t 1kg 1dag=1 001 010g prawda
3.
a=2,4dm=24cm
h=24=3=27cm
P=ah
P=24*27=648cm²