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=2 x 3,14 x 0,3 x ( 0,3 + 2,4)
=2 x 3,14 x 0,3 x 0,72
=1,35648cm2
B. Volume = Π x r x r x t = 3,14 x 0,3 x 0,3 x 2,4
= 0,2826 x 2,4 = 0,67824cm2
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