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r = 7 cm
t = 12 cm
V = 22/7 × 7 × 7 × 12
V = 1848 cm^3
kerucut :
r = 7 cm
t = 6 cm
V = 1/3 × 22/7 × 7 × 7 × 6
V = 308 cm^3
total :
1848 + 308
= 2156 cm^3..
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