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r1=3
r2=3×2
=6
t=12
dit.
volume1
volume2
jawab?
volume 1=1/3×π×r²×t
=1/3×3,14×3×3×12
=339.12/3
=113,04 cm³
volume2=1/3×π×r²×t
=1/3×3,14×6×6×12
=1356,48/3
=452,16
perubahan volume kedua tersebut= volume2-volume1=452,16-113,04=339,12 cm³