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Diket:Perbandingan 5 : 3; Jumlah perbandingannya adalah 8
Kelilingnya 128
Ditanya: Nilai panjang & lebar?
Jawab:
Keliling = 2 × (p+l)
128 = 2 × (p+l)
64 = p + l
Maka nilai p
p = 64 × 5/8 = 40
Dan nilai l
l = 64 × 3/8 = 24