Jika panjang garis pelukis kerucut 15 cm,volume bangun adalah.. A.360phi cm³ B. 1584phi cm³ C. 2876phi cm³ D.3312phi cm³ bantu yaaa pakai cara:')

t² = s² - r²
= 15² - 12²
= 225 - 144
= 81
t = √81
= 9

V.Bangun = V. 1/2 Bola + V. kerucut
= 1/2 × 4/3 × π × 12³ + 1/3 × π × 12² × 9
= 2/3 × π × 12 × 12 × 12 + π × 12 ×12 × 3
= 2/3π × 1728 + 432π
= 2π × 576 + 432π
= 1152π + 432π
= 1584π