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Mathematics, 07.06.2020 18:57 mirzakasumovic8926

14. AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm and centre 0 (see Fig. 12.33). If Angle AOB = 30°, find the area of the
shaded region.

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14. AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm and centre 0...
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