Or alternatively you can use a brush to create the background pattern (assuming also that this is what you are asking about).
Create a triangle tall and thin, create a new brush with it and use the brush on a circle (which just has an outline); make sure that 'rotate along path' is ticked in the brush menu 'Rotation' section. Adjust the spacing of the brush if necessary. When it is spaced ok, convert line to shape (then you can add a circular fill / transparency etc). Draw a rectangle/square with the alternate background colour and use this to clipview the 'rays'. Image below is a quick example.
You could also use a blend to do the same sort of thing, ie attach the blend to a curve (circle).
Regards
Su
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