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Vkuli= 4/3piRkwadrat
4/3piRkwadrat=216
4/3*3*R<fo kwadratu>=216
4R<kw>=216/4
Rkwadrat=54
R= pierwiastek z 54
r² = 3/4 Vπ | √
r = √3/4 Vπ
Podstawiamy:
r = √162π
216=4/3*3,14*r³
216=4,18*r³
r³=51,57
r=3,72