Question

Name a convenient unit $"t"$to be used to measure the distance between two cities.

Answer 1

1. Generally, we prefer the S.I unit to measure distance.
2. But the distance between the two cities is quite large which is difficult to measure in an S.I. unit i.e. meter.
3. So, we prefer to measure the distance between two cities in Kilometers or miles.
4. $$\begin{gathered} 1Km=1000m \\ 1mile=1609m \end{gathered}$$