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Verified answer
V tabungv kerucut
v tabung - v kerucut
10395 - 3465
6930
V = (phi x r x r x t) - (1/3 x phi x r x r x t)
V = phi x r x r x t ( 1 - 1/3)
V = 22/7 x 21/2 x 21/2 x 30 ( 2/3 )
V = 11 x 3 x 21 x 10
V = 6930 cm^3
Jadi jawabnya B