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v=½π 30²400cm
v=900×200π
v=180000π
v=565200
v₂=½ (a=b)h×H
v₂=½×140×50×200=700000
v₂>v
700000-565200=134800cm³≈135l
v₃>v₂
700000=40×40×h
h=437,5
wymiary te to 40cmx40cmxh>437,5cm