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K = 46 cm
Dit : p, l
Jawab :
K = 2 (p + l)
46 = 2 (5x + 2 + 3x + 4)
46 = 2 (8x + 6)
46 = 16x + 12
46 - 12 = 16x
34 = 16x
x = 2,125 cm
p = 5x + 2
p = 5(2,125) + 2
p = 10,625 + 2
p = 12,625 cm
l = 3x + 4
l = 3(2,125) + 4
l = 6,375 + 4
l = 10,375 cm