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= πr² x t
= 3,14.(8,5)² x 21
=226, 865 x 21
= 4764,165 cm³
t = 2,1 dm = 21 cm
d = 17 cm
r = 8,5
π = 22/7
V = π.r^2.t
V = 22/7 . 8.5^2 . 21
V= 22/7 . 72,25 .21
V = 4768,5 cm^3
maka volume tabung 4768,5 cm^3
semoga membantu 6_^