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panjang = 4,5 cm
lebr gmbr = 3 cm
skla = 1 : 600
maka :
P sebenrnya = 4,5 x 600 = 2.700 cm = 27 m
L sebenrnya = 3 x 600 = 1.800 cm = 18 m
maka :
K = 2 x (p+l)
= 2 x (27+18)
= 2 x 45
= 90 m
keliling sebenarnya = 15x 600= 9000 cm = 90 m