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Kelas 8 Matematika
Bab Bangun Ruang

t = d = 2r

r = d/2

Volume tabung : volume bola
= (π . r . r . t) : (4/3 . π . r . r . r)
= (r . r . 2r) : (4/3 . r . r . r)
= 2 : 4/3
= (2 . 3/2) : (4/3 . 3/2)
= 3 : 2