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​Q22: Question – Paper 2 – November 2017

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Content:

• Area of Sectors
• Expressing One Number as a Percentage of Another​

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• Area of Sectors
• Expressing One Number as a Percentage of Another

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Question

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22)
The cross section of an earring is a semicircle, centre C, radius 25 mm
The earring is black and white.

​The shaded area is black.

Sector BCD is white and has radius 12 mm

Is more than 20% of the semicircle white?
​You must show your working.

[5 marks]

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