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Jari jari =
Tabung = 28 cm
Kerucut = 1/4 × 28 = 7 cm
Tinggi 20cm.
Vk = 22/7 × 7 ÷7 × 20
= 3080 cm
Vt = 22/7 × 28 × 28 × 20
= 49280 cm
49280 : 3080 = 16 : 1