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Tinggi = √garis pelukis² - jari-jari²
= √17²-8²
= √289 -64
= √225 = 15 cm.
Langkah kedua : Hitung volume kerucut
Volume = 1/3πr²t
= 1/3 × 3,14 × 8² ×15
= 1.004,8 cm³.