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Volume Tabung : Volume Bola
πr²t : 4/3 πr³
π (1/2 d)² t : 4/3 π (1/2 d)³
1/4 πd²t : 1/6 πd³
1/4 π (7²) * 7 : 1/6 π (7³)
1/4 π * 343 : 1/6 π * 343 (karena π dan 343 sudah sama, maka boleh dicoret)
1/4 : 1/6 (kali silang)
6 : 4
3 : 2