4 kilometers=400,000 centimeters
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To convert the units to the same measurement, we need to convert 1 km to cm. There are 100,000 cm in 1 km (1 km = 100,000 cm). Therefore, the ratio of 4 cm to 1 km is 4:100,000, or simply 4:100,000.
Answer: 86,000 cm = 0.86 km
Answer: 2.75 km = 275,000 cm
Multiply km by 100,000.
100 cm = 1 m 1000 m = 1 km → 1000 x 100 cm = 1 km → 100000 cm = 1 km → To convert cm to km, divide by 100000 → 86000 cm = 86000 ÷ 100000 km = 0.86 km