tolong di jawab dan caranya.

12) v = Π×r×r×t
= 22/7×7×7×16
= 2.464
jawaban : c

13) v = Π×r×r×t
= 22/7×7×7×20
= 3.080
jawaban : c

14) v = Π×r×r×t
= 22/7×7×7×16
= 2.464
jawaban : c

15) v = Π×r×r×t
= 22/7×10,5×10,5×50
= 17.325
jawaban : d

16) v = Π×r×r×t
=22/7×14×14×15
= 9.240
jawaban : a

17) v = Π×r×r×t
=22/7×10×10×28
= 8.800
jawaban : a

18) v = Π×r×r×t
= 22/7×6×6×28
= 3.168
jawaban : d

19) v = Π×r×r×t
= 3.14×10×10×5
= 1.570
jawaban : c

20) v = Π×r×r×t
= 22/7×14×14×65
= 40.040
jawaban : c

21) v = Π×r×r×t
= 22/7×7×7×21
= 3.234
jawaban : c

Beri tanda terimakasih ya sobat brainly..