8. Find the area of the coloured sector

A spinner has \(six\) sectors, half of which are green and half of which are brown. If the radius of the spinner is 5.7 \(cm\), what is the area of the sectors?  [Use $\mathrm{\pi }$ \(= \)\(22/7\)].

 

 

Area of the green sectors is ${\mathit{cm}}^2$.