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odp=10000*1,3=13000kg
v - a*b*h
v- 50*20*10=10000m3
1.3*10000m3=13000kg=13t
powietrze wazy 13ton
50*10*2=1000
10*20*2 =400
2000+1000+400=3400
1,3*3400=4420ton