Arrange the following lengths in the increasing magnitude
1 metre, 1 megametre, 1 centimetre, 1 kilometre, 1 millimetre, 1 micrometre.

Explanation

To arrange the lengths in increasing order, we first need to convert all the given lengths into a common unit. The most convenient unit to use here is meters (m). Let's convert each length:

1. **1 micrometre (µm)**:
- 1 µm = \(10^{-6}\) m

2. **1 millimetre (mm)**:
- 1 mm = \(10^{-3}\) m

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