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120 = (4x+3) x 8
120 = 32x + 24
32 x = 120-24
x = 96/32 = 3
jadi p = (4x+3) = (4x3) +3 = 15 cm
Kell 2x (p+l) = 2 x (15+8) = 46 cm
(4x+3).8=120
32x+24=120
32x =120 - 24
32x = 96
x = 96/32
x= =3
p=4x+3
=4.3 +3
=12+3
=15
k=2.(p+l)
k=2.(15+8)
k=2. 23
l= 46
keliling=46 cm