volume bangun-bangun berikut

10. V=π x r² x t
=3,14 x 3,5² x 16
=3,14 x 12,25 x 16
=38,465 x 16
=615,44 dm³
11. V=π x r² x t
=22/7 x 7² x 10
=22/7 x 49 x 10
=154 x 10
=1540 dm³
12. V=π x r² x t
=3,14 x 5² x 50
=3,14 x 25 x 50
=78,5 x 50
=3.925 cm³