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Keliling = 2P + 2L = 4L + 2 + 2L
44 = 6L + 2
42 = 6L
L = 7cm
P = 2L + 1 = 14 + 1 = 15cm
Panjang = 2lebar + 1
Keliling = 44cm
K = 2(p+l)
44 = 2(2l+1+l)
44 = 2(3l+1)
44 = 6l + 2
44 - 2 = 6l
42 = 6l
Lebar persegi panjang = 7cm
Panjang persegi panjang = 2(7) + 1 = 15cm