7.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{c8f8d35d-c2dd-4a1f-a4bb-a4fa06413d12-14_327_595_251_676}
\captionsetup{labelformat=empty}
\caption{Figure 3}
\end{figure}
Not to scale
Figure 3 shows the design for a structure used to support a roof.
The structure consists of four wooden beams, \(A B , B D , B C\) and \(A D\).
Given \(A B = 6.5 \mathrm {~m} , B C = B D = 4.7 \mathrm {~m}\) and angle \(B A C = 35 ^ { \circ }\)
- find, to one decimal place, the size of angle \(A C B\),
- find, to the nearest metre, the total length of wood required to make this structure.