The given scale is 3cm = 6 m.
The actual space shuttle is 36 meters long.
We have to use the given scale to find the scale model in centimeters. We have to multiply each side by 6.
[tex]\begin{gathered} 3\cdot6\operatorname{cm}=6\cdot6m \\ 18\operatorname{cm}=36m \end{gathered}[/tex]