Tolong di bantu ya…

Volume = 1/3 × phi × r^2 × t

1.004,80 = 1/3 × 3,14 × r^2 × 15

1.004,80 = 1/3 × 47,1 × r^2

1.004,80 = 47,1 / 3 × r^2

r^2 = 1.004,80 × 3/47,1

r^2 = 64

r = 8 cm

~CMIIW