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r tab = r bola = 1/2 d = 12,5
t tabung = 5d = 10 r
Volume ruang kosong = Volume tabung - volume 5 bola
V = π r² t - 5(4/3) π r³
V = π r² (10r) - 20/3 π r³
V = 10 π r³ - 20/3 π r³
V = (10- 20/3) π r³
V = (10/3)(3,14)(12,5)³
V = 20.442,71