Perhatikan gambar. Jari-jari setengah bola = jari-jari alas tabung = r = 46 – 25 = 21 cm tinggi tabung = t = 25 cm Volume tempat minum = volume tabung + volume setengah bola = (luas alas tabung × tinggi tabung) + (1/2 × volume bola) = (π r² t) + (1/2 × 4/3 π r³) = (22/7 × 21² × 25) + (1/2 × 4/3 × 22/7 × 21³) = 34.650 + 19.404 = 54.054 Jadi, volume tempat air minum = 54.054 cm³ Jawab: C
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Perhatikan gambar.
Jari-jari setengah bola = jari-jari alas tabung = r = 46 – 25 = 21 cm
tinggi tabung = t = 25 cm
Volume tempat minum
= volume tabung + volume setengah bola
= (luas alas tabung × tinggi tabung) + (1/2 × volume bola)
= (π r² t) + (1/2 × 4/3 π r³)
= (22/7 × 21² × 25) + (1/2 × 4/3 × 22/7 × 21³)
= 34.650 + 19.404
= 54.054
Jadi, volume tempat air minum = 54.054 cm³
Jawab: C