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klplpng = 2.(p + l)
50 = 2 (p + p - 5) ....bagi dengan 2
25 = 2p - 5
2p = 25 + 5
2p = 30
p =
p = 15 cm
K = 50 m
2(p+l) = 50
2(5+l+l) = 50
10+4l = 50
4l = 40
l = 10
p = 5+l
= 5+10
= 15
semoga membantu