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π x r² x t
= 22/7 x 21 x 21 x 35
= 48.510 cm³ (B)
3)
π x r² x t
= 22/7 x 28 x 28 x 60
= 147.840 cm³ (B)
6) *soalnya kepotong*
π x r² x t
= 3,14 x 15 x 15 x ...
= 706,5 x ...
=
7)
π x r² x t
= 22/7 x 21 x 21 x 28
= 38.808 cm³