1.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{659a0479-c8c6-418b-b8a9-67ad68474023-02_364_369_374_849}
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\caption{Figure 1}
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Figure 1 shows a circle with centre \(O\). The points \(A\) and \(B\) lie on the circumference of the circle.
The area of the major sector, shown shaded in Figure 1, is \(135 \mathrm {~cm} ^ { 2 }\).
The reflex angle \(A O B\) is 4.8 radians.
Find the exact length, in cm, of the minor arc \(A B\), giving your answer in the form \(a \pi + b\), where \(a\) and \(b\) are integers to be found.
(4)