From the table, we can write that
1000 meters = 1 km
so,
3500 meters = 1/1000 * 3500 = 3.5km
similarly,
500 meters = 1/1000 * 500 = 0.5 km
75 meters = 1/1000 * 75 = 0.075
1 meter = 1/1000 * 1 = 0.001
x meters = 1/1000 * x = x/1000 meters
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