perbandingan panjang sisi jajar genjang 3:4 . jika keliling jajar genjang 56cm maka panjang salah satu sisinya adalah?
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sisi B = 4x
Keliling = 2 (sisiA + sisiB)
56 = 2 (3x + 4x)
56 = 2 (7x)
56 = 14x
x = 4
Sisi A = 3x = 3(4) = 12cm
Sisi B = 4x = 4(4) = 16cm