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Bab Bangun Ruang Sisi Lengkung

r = 7 cm

V = 4/3 × 22/7 × r^3

V = 3/4 × 4/3 × 22/7 × 7 × 7 × 7

V = 12/12 × 22 × 7 × 7

V = 1 × 22 × 49

V = 1.078 cm^3

V = ( B )