She bought 800 centimeters(cm) of fabric . The question ask us to find the length of the fabric she bought in meters. This simply means we have to convert the length of the fabrics from centimeters to meters. Mathematically, this can be represented as follows.
![\begin{gathered} 1\operatorname{cm}=0.01m \\ 800\operatorname{cm}=\text{?} \\ \text{cross multiply} \\ \text{length of the fabrics = 800}*0.01 \\ \text{length of the fabrics = }8m \end{gathered}]()