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t = 2xd = d : 14 = 2 x 14 = 28
Dit : v = ?
Jwb : v = LA x t
= phi r kuadrat x t
= 22/7 . 7 . 7 x 28
= 154 x 28
=4312 cm kubik
t=7×2=14
V tabung = Πr²t
22/7×7×7×14
22×7×14
2156 cm²