1.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{9215e382-406c-41a3-8907-f465b134dd87-2_509_538_248_657}
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\caption{Figure 1}
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Figure 1 shows the sector \(O A B\) of a circle of radius 9.2 cm and centre \(O\).
Given that the area of the sector is \(37.4 \mathrm {~cm} ^ { 2 }\), find to 3 significant figures
- the size of \(\angle A O B\) in radians,
- the perimeter of the sector.