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9. 4*1,5*2=12m³
21/100*12=2,52m³
Odp. W namiocie objętość tlenu wynosi 2,52 m³
Liczę na naj :)
8. 4m * 1,5m * 2m = 12m^3
12 - 100%
x - 21%
x = 2,52 m^3 tlenu w namiocie