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klilig = 4 x s
= 4 x 8
= 32
kelilig persegi pakang = 32
2 ( p + l ) = 32
2 ( p + 6 ) = 32
2p + 12 = 32
2p = 32 - 12
2p = 20
p = 20/2
p = 10 cm
jawabannya panjang adalah 10 cm
l = 6 cm
K pp = 2(p + l)
K p = 4s
= 4 X 8
= 32 cm
K pp = 2(p+l)
32 = 2(p+6)
= 2p + 12
p = 20/2
= 10 cm