Jawabanmu

Jawaban paling cerdas!
2014-05-19T17:15:55+07:00
V = 1/3.La.t
4000 = 1.3.s².30
4000 = 10.s²
4000/10 = s²
400   = s²
√400 = s
20    = s

maaf kalau salah:)
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