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πr^t:π4r^t
jadi perbandingannya 1:4
JAWAB
maksud yg benar mungkin adalah perbandingan volume dua tabung.
⇨ V1 : V2
⇨ π×r×r×t : π×2r×2r×t
⇨ π×r×r×t : 4×π×r×r×t
⇨ 1 : 4