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b. sesungguhnya = 7,5 x 600 = 3800 cm / 38m
c. pada denah = 90m : 600 cm = 9000 : 600 = 15 cm
a. 1:600 ■■■ karena keduanya dibagi 3
b.18÷3=6. 6×7,5
b. 45 m(4500 cm)
c.90÷18=5. 5×3
c. 15cm