Mathematics

Problem

Which of the following conversion factors can be multiplied to a length expressed in centimetres so that the result is expressed in metres? a)

100\,\text{m}\,\text{cm}^{-1}

\dfrac{1\,\text{m}}{100\,\text{cm}}

1\,\text{m}\,\text{cm}^{-1}

0.1\,\text{m}\,\text{cm}^{-1}