Which would you measure using meters?

Answer 1

Personally nothing as I would use imperial measures, but meters are used to measure any linear length, eg the length of a table, the width of a table, the distance around a running track, etc.
meters can be used to measure smaller things, eg the length of a pencil, but this would be a fraction of a meter and centimeters (hundredths of meters) would be used instead to keep the numbers simple.
Similarly, longer distances, like 1500 meters or 10,000 meters (distances run in athletic competitions), could be measured, but to make the numbers simpler, kilometers (1000 meters) would be used.
Once astronomical distances are reached, meters or kilometers could be used, but light years are used instead to keep the numbers simpler. A light year is the distance that light travels in 1 year which is approx 9.46 × 1015 meters (another length measured in meters!)