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Kell = 60 ⇒ a + b + c = 60Luas = 125 1/2.a.b = 150 ⇒ a.b = 300
a² + b² = c²
(a+b)² - 2ab = c²
(60-c)² - 2.300 = c²
3600-120c+c² - 600 = c²
3000 - 120 c = 0 ⇒ c=25 a+b = 60-25 = 35
Jadi c : (a+b) = 25:35 = 5 : 7 (A)
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