Jawabanmu

2014-09-13T20:38:05+07:00
Diket. p = 13
L = 520
Dit. kll?

L = p × l
520 = 13 × l
l = 520/13 = 40

kll = 2 (p + l)
= 2 (13 + 40)
= 2 (53) = 106

sorry ya klo salah, soalnya lebarnya agak meragukan...
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