tolong jawab yy beserta caranya

1) VOLUME = π x r² x t
= 3,14 x 12cm x 12cm x 16cm
= 7.234,56


2) VOLUME = π x r² x t
=22 x 14 cm x 14 cm x 18cm
__
7
= 22 x 11.088
= 243,936


3) VOLUME = π x r² x t
=3,14 x 18cm x 18cm x 24cm
= 3,14 x 7.776
= 24.416,64