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Verified answer
Jawab4 keliling persegi panjang = 5 keliling persegi
4(2)(p+l) = 5 (4s)
8 (p+l) = 20 s
s = 8 (p+l) / 20
s = 8(25 +20) / 20
s = 8(45)/20
s = 18 cm