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a. ukuran lahan sebenarnya:
22,5 x 500 = 11.250 cm
= 112,5 meter
12 x 500 = 6000 cm
= 60 meter
ukuran sebenarnya = 112,5 m × 60 m
b. luas denah : luas beneran = 22,5×12 : 11.250×6000
= 270 : 67.500.000
= 1 : 250.000