2. Find the area of the shaded region in Fig. 12.20, if radii of the two concentric circles with centre o are 7 cm and 14 cm respectively and Z AOC = 40°.
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2. Find the area of the shaded region in Fig. 12.20, if radii of the two concentric circles with centre o are 7 cm and 14 cm respectively and Z AOC = 40°.
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