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1/3 tinggi tabung= 50 cm
jadi,3/3 tinggi tabung= 50 × 3=150 cm
diameter=28 cm , jari-jari=14cm
ditanya: volume tabung / drum
jawab:
volume tabung= \pi × jari-jari ×jari-jari × tinggi tabung
volume tabung= 22/7 × 14 × 14 × 150
volume tabung= 92 400 cm³ = 92,4 dm³ = 92,4 liter
jadi, volume drum adalah 92,4 liter