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Volum kerucut = πr²t = π x 12² x 15 = 2160π cm³
Volum setengah bola = 2/3 x π x r³ = 2/3 x π x 12³ = 1152π cm³
Volum total =2160π +1152π = 3312π cm³
Massa bandul = 3312π x 10 gram = 33120π gram atau 104049,55 gram