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r= 5 cm
V= 4/3 π r³
Stożek:
r=10 cm
V= 1/3 π r² * H
4/3 π r³ = 1/3 π r² * H / ÷ π
4/3 r³ = 1/3 r² * H
4/3 r= 1/3 H
1/3 H = 4/3 r / ÷ 1/3
H = 4/3 r * 3
H = 4r
H = 40 cm
* znak mnożenia