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t^2 = s^2 - r^2
t^2 = 25^2 - 7^2
t^2 = 625 - 49
t =√576
t = 24 cm3
lalu volumenya = phi . r^2 .t : 3
= (22/7 . (7^2)) . (24 : 3)
= 22 . 7 . 8
=1.232 cm3