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s/2 = 6
triple phytagoras :6,8,10
l.sisi tegak = 4×a×t/2 = 4×12×10/2 = 240 cm persegi.
Lp.Limas = 240 + 144 = 384 cm persegi
144 = s^2
s = 12 cm
t sisi tegak = 6^2 + 8^2
t = 10 cm
Lp = La + 4 L sisi tegak
= 144 + 4x10x12/2
= 144 + 240
= 384cm^2
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