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a dan b)
2(2p + p) = 54 cm
4p + 2p = 54 cm
6p = 54 cm
p = 54/6 = 9 cm.
Maka Lebar = 9 cm.
c) Panjang = 2 x lebar
Panjang= 2 x 9 = 18
Lebar: 9 cm