Question

39. Which of the following conversion factors would you use to change 18 kilometers to meters?

Answer 1

Converting 18 kilometers to meters.

1 kilometer = 1000 meters

I would use 1000m/1km as a conversion factor.

18 kilometers * 1000m/1km = 18 * 1000m = 18,000m

The km unit cancels out because it is both in the numerator and in the denominator.

Answer 2

1 kilometer = 1000 meters

I would use 1000m/1km as a conversion factor.

18 kilometers * 1000m/1km = 18 * 1000m = 18,000m