The value of 1 cm : 1 km is 6.66666667e-7
The ratio expression is given as:
1 cm : 15 km
Convert km to cm
So, we have
1 cm : 1 km = 1 cm : 1500000 cm
Express as quotient
1 cm : 1 km = 1 cm/1500000 cm
Evaluate the quotient
1 cm : 1 km = 6.66666667e-7
Hence, the value of 1 cm : 1 km is 6.66666667e-7
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