Explanation
There are 2.54 centimeters (cm) per inch and 100 cm per meter so there are
\(25.4 \frac{\mathrm{cm}}{i n} / 100 \frac{\mathrm{cm}}{i n}=0.0254 \frac{\mathrm{m}}{i n}\)
There are 12 inches (in) in a foot so there are
\(0.0254\frac{m}{{in}} \times \frac{{12in}}{{ft}} = 0.3048\frac{m}{{ft}}.3m/0.3048\frac{m}{{ft}} = 9.843 \text { feet }\)