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La = phi x d = 22/7 x 7 x 7 = 22 x 1 x 7 = 154 cm2.
V. tabung = La x t = 154 x 12 = 1848 cm3...
d = 7cm --> r = 3,5cm
t = 12 cm
pi = 22/7
dit : volume ??
jwb :
V=pi.r².t
V = 22/7.3,5.3,5.12
V = 22/2.3,5.12
V = 22.3,5.6
V = 462cm³
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salam damai.