Sebuah tabung memiliki diameter alas 14 cm dan tinggi 18 cm. Volume bangun tersebut adalah....
D = 14 cm
r = d/2 = 14/2 = 7 cm
V = πr²t
V = 22/7 × 7 × 7 × 18
V = 22 × 7 × 18
V = 154 × 18
V = 2.772 cm³
V = 22/7 × 7² × 18
V = (22/7 × 7) × (7 × 18)
V = 22 × 126
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Sebuah tabung memiliki diameter alas 14 cm dan tinggi 18 cm. Volume bangun tersebut adalah....
Penyelesaian:
D = 14 cm
r = d/2 = 14/2 = 7 cm
V = πr²t
V = 22/7 × 7 × 7 × 18
V = 22 × 7 × 18
V = 154 × 18
V = 2.772 cm³
V = πr²t
V = 22/7 × 7² × 18
V = 22/7 × 7 × 7 × 18
V = (22/7 × 7) × (7 × 18)
V = 22 × 126
V = 2.772 cm³