Question

The lenght of a book is 15 cm here cm is

Answer 1

Answer:

I think it is centimetre

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Answer 2

Centimetres. (Unit of Measurement)

The length of something is measured by its distance. A road's distance, for example, is the length of the road.

Millimeters, centimetres, metres, and kilometres are the most frequent units of distance in the metric system.

Any arbitrarily determined and recognised reference standard for measuring length is referred to as a unit of length. The metric units are the most widely used units in contemporary times, and they are utilised in every country on the planet.