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9x = 225
x = 25
AB = ?
perbandingan AB kan 2 nah berarti 2 x 25 = 50
2 : 3 : 4
2y : 3y : 4y
225 = 2y + 3y + 4y
225 = 9y
y = 225/9
y = 25
AB = 2y = 2 x 25 = 50 cm
BC = 3y = 3 x 25 = 75 cm
AC = 4y = 4 x 25 = 100 cm