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AB = BC
4x - 8 = 96 - 4x
4x + 4x -8 + 8 = 96 + 8 -4x + 4x
8x = 104
x = 104 : 8
x = 13
maka keliling, cari sisinya dulu
4x - 8 = 4(13) - 8 = 52-8 = 44 cm
K = 4s
K = 4 x 44
K = 176 cm