Volume kerucut 18480 cm kubik Tinggi 30 cm Berapa jari jari?

v = (1/3) (π r²) t
18480 = (1/3) ((22/7) × r²) 30
18480 = (220 / 7) × r²
r² = (18480 × 7) / 220
r² = 588
r = √588