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t = 2 x 2 x r
= 2 x 2 x 7
= 28 cm
jawabannya adalah sbb
volume = π x r² x t
= 22/7 x 7 x7 x 28
= 22 x7 x 28
= 4312 cm³
:22/7×7×7×28
: 30,184÷7 = 4,312