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Kll pp = 12 = 2l + 2l + l + l
12 = 6l
lebar = 12/6 = 2cm
12 = 2p + 2l = 2p + 4
2p = 12-4 = 8
p = 8/2 = 4cm
luas pesegi = s x s = 3 x 3 = 9
luas prsg pnjg = p x l = 4 x 2 = 8
jadi perbandigan luas persegi : persegi panjang adalah 9 : 8