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0580 P23 - Jun 2014 - Q21 - 5 marks
15547
Two concentric circles with three radii

The diagram has rotational symmetry of order 3. A club badge shades sections as shown; outer radius 6 cm, inner radius 4 cm.

Shaded badge with two-thirds outer ring and one-third inner circle

Find the total perimeter of the shaded area. [5]

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