Convert the statement scale 1 cm = 20 km , Distance on the ground = 800 km , Find the distance on the map .
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To work out the distance in real life, we need to multiply this length by 50000. This gives 3 cm × 50000 = 150000 cm which is 1500 m or 1.5 km. Alternatively, we could have just remembered that each 1 cm on the map is 0.5 km in real life. Hence, 3 cm on the map must be 3 × 0.5 km = 1.5 km in real life.
So ,20km=1cm
So,1km = 1/20cm
800km=1/20*800=40cm
Explanation:
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