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=1/3.π.1².2
=2/3π
v2=1/3.π.r².t
=1/3.π.2².3
=4π
berarti perbandingannya=
2/3:4 (×3)=2:12 →1:6
#semoga bermanfaat
maaf kalo salah, tapi saya rasa benar :)