In the given figure, two concentric circles with centre O have radii 21 cm and 42 cm. If `/_AOB=60^

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In the given figure, two concentric circles with centre O have radii 21 cm and 42 cm. If `/_AOB=60^(@)` find the area of the shaded region.
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Itna ghtiya koii kse padha skta h🥲 koii concept clear nhi h naa kuch
Or jo pta v hai woh v bhul jayenge 🥲

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