A structure inside a cell measures 1 nanometre1\text{ nanometre}1 nanometre in diameter.
What is the diameter of this structure in metres?
1×10−3 metres1 \times 10^{-3}\text{ metres}1×10−3 metres
1×10−6 metres1 \times 10^{-6}\text{ metres}1×10−6 metres
1×10−9 metres1 \times 10^{-9}\text{ metres}1×10−9 metres
1×10−12 metres1 \times 10^{-12}\text{ metres}1×10−12 metres