jika volume belahan bola 19.404 m pangkat 3,maka tentukanlah jari jari bola

V½bola = 19404
2/3πr³ = 19404
2/3.22/7.r³ = 19404
44r³/21 = 19404
44r³ = 407484
r³ = 407484/44
r³ = 9261
r = ³√9261
r = 21 cm

V = 1/2•4/3•π•r^3
19.404 = 1/2 • 4/3 • 22/7 • r^3
19.404 = 2/3 • 22/7 • r^3
r^3 = (19.404•3•7) / 22 • 2
r^3 = 407.484 / 44
r^3 = 9261
r = akar 3 dari 9261
r = 21 cm