one foot is equivalent to approximately 0.3048 meters. if a building is 65-feet long, what is the length of the building in meters, to the nearest tenth?

Answer 1

you can always multiply by 1 without changing anything. You know that

1 ft = 0.3048 m
That means that
1ft/0.3048m = 1
0.3048m/1ft = 1

Now, you want to convert feet to meters, so just multiply by the "correct" representation of 1, so that the units cancel out as you need them to do.

65ft * 0.3048m/1ft = 19.812m