7.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{5eee32af-9b0e-428c-bbc6-1feef44e0e1e-16_661_999_246_603}
\captionsetup{labelformat=empty}
\caption{Figure 2}
\end{figure}
The shape \(A B C D A\) consists of a sector \(A B C O A\) of a circle, centre \(O\), joined to a triangle \(A O D\), as shown in Figure 2.
The point \(D\) lies on \(O C\).
The radius of the circle is 6 cm , length \(A D\) is 5 cm and angle \(A O D\) is 0.7 radians.
- Find the area of the sector \(A B C O A\), giving your answer to one decimal place.
Given angle \(A D O\) is obtuse,
- find the size of angle \(A D O\), giving your answer to 3 decimal places.
- Hence find the perimeter of shape \(A B C D A\), giving your answer to one decimal place.
\href{http://www.dynamicpapers.com}{www.dynamicpapers.com}