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Objętość = 378cm³
2. 135cm³ : 9cm = 15cm²
Pole podstawy = 15cm²
v=42*9=378
135=pp*9
pp=15
V=42 × 9
V=378cm³
zad.2
V=135
H=9
V=Pp ×h
135=Pp ×9/÷9
H=15