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8x4x3dm
V1 = 96dm³ = 96 l
V2 = 1/2Pp * H
V2 = 1/2* πr² * H
r = 2dm
H = 8dm
V2 = 1/2 * π * 4 * 8
V2 = 16π dm³
V = V1 + V2
(dokładny) V = 96l + 16π l = 96dm³ + 16π dm³
(przybliżony z niedomiarem!) V = 146,265 l = 146,265 dm³
odp. Kufer pomieści 146,265 dm³, tj. 146,265 l