Which of the following distances is the shortest? 0.007 km 0.2 cm 30 mm 580 mm

Option (b) is the correct answer.

Explanation:

Since, all the given distances are present in different units. So, convert them into same unit.

As there are 1000 meter present in 1 kilometer so, we convert all of them into meter as follows.

                           = 7 m

There are 0.01 m present in 1 cm.

So,     = 0.002 m

There are 0.001 m present in 1 mm.

So,     = 0.03 m

        = 0.58 m

Thus, we can conclude that out of the given options shortest distance is 0.2 cm.