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= 1/3 . 22/7 . 14^2 . 48
= 1/3 . 22/7 . 196 . 48
= 22 . 28 . 16 = 9856 cm^3
V bola = 4/3 π r³
= 4/3 . 22/7 . (21/2)^3
= 4/3 . 22/7 . 9261/8
= 2/3 . 11 . 1323
= 2 . 11 . 441 = 9702 cm^3
volume ruangan dalam kerucut diluar bola =
= V kerucut - Vbola
= 9856 - 9702 = 154 cm^3
^ = pangkat