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प्रश्न
In the given figure, PQRS represents a flower bed. If OP = 21 m and OR = 14 m, find the area of the flower bed.
योग
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उत्तर
Area of the flower bed is the difference between the areas of sectors OPQ and ORS.
Area of the flower bed`=theta/360xxpi("PO"^2 - "OR"^2)`
`=90/360xx22/7(21^2 - 14^2)`
`=1/4xx22/7xx35xx7`
=192.5 m2
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