We need to convert 12 feet to meters.
We know that:
[tex]1\text{ foot }\approx0.305\text{ meter}[/tex]Thus, we have:
[tex]\begin{gathered} 12\text{ feet }=12\cdot1\text{ foot} \\ \\ 12\text{feet}=12\cdot0.305\text{ meter} \\ \\ 12\text{feet}=3.66\text{ meter} \end{gathered}[/tex]Therefore, the ceilings are 3.66 meters high.