tolong jawab ya bsk di kumpulkan please (makasi)

v = 1/3 πr²t
= 1/3 x 22/7 x 10,5 x 10,5 x 30
= 1/3 x 22/7 x 3.307,5
= 1/3 x 10.395
= 3.465 cm³
jawabannya A