Mathematics

Problem

The diameter of a virus is given as

1.25 \times 10^{-8}\,\text{m}

. Express this diameter in nanometres (nm) in standard decimal form.

(1\,\text{nm}=10^{-9}\,\text{m})

125\,\text{nm}

1.25\,\text{nm}

12.5\,\text{nm}

0.125\,\text{nm}