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Verified answer
//Vk=Volume kerucutr=jari-jari
t=tinggi kerucut//
Vk=1/3πr²t
(3)471cm³=(3,14)(5cm)²t
1.413cm³=3,14(25cm²)t
1.413cm³=78,5cm²t
t=1413cm³/78,5cm²
t=18cm