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Verified answer
R = td = 28
2r = 28
r = 14
V = π×r^2×t
V = π×r^2×r
V= 22/7×14×14×14
V=8624dm^3
Diket d = 28 dm
d = 2r
r = 28 : 2 = 14 dm
r = t = 14 dm
V tabung = π x r x r x t
= 22/7 x 14 dm x 14 dm x 14 dm
= 8624 dm3