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Area and Circumference of Circles

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Question 18

The diagram shows a decorative circular border on a plaque, formed by cutting a circle out of a larger circular wood piece.

A shaded ring (annulus) formed by two concentric circles.

The radius of the smaller circle is 8 cm. The diameter of the larger circle is 20 cm.

Find the area of the shaded border.

[3]

Area and Circumference of Circles Questions

  1. GCSE
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  3. /Area and Circumference of Circles