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244 = 36x² + 25x²
244 = 61x²
x²=244:61
x²=4
x=2
AB = 5x = 5 × 2 = 10 cm
BC = 6x = 6 × 2 = 12 cm
K = AC+AB+BC
K = √244+10+12
K = 12+22
K = 34 cm
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