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The radius of two circles are in the rat...

The radius of two circles are in the ratio`3 : 4` and sum of their areas is equal to the area of a circle whose radius is `35`cm. Find the ratio of the circumference.

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KALYANI PUBLICATION-AREAS RELATED TO CIRCLES-EXERCISE
  1. The inner circumference of a circular track is 220 m. The track is 7 m...

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  2. The radius of two circles are in the ratio3 : 4 and sum of their areas...

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  3. The radius of two circles are in the ratio3 : 4 and sum of their areas...

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  4. The radius of two circles are in the ratio3 : 4 and sum of their areas...

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  5. The radius of two circles are in the ratio3 : 4 and sum of their areas...

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  6. How many times will the wheel of a car rotate in a journey of 24.2km i...

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  7. A bicycle wheel makes 5,000revolution in moving 11km. Find the diamete...

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  8. The wheels of a car of diameter 80cm each.How many complete revolution...

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  9. AC and BD are two perpendicular diameters of a circle ABCD. If AC=16 c...

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  10. A chord of a circle of radius 10cm substends a right angle at the cent...

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  11. A chord of a circle of radius 10cm substends a right angle at the cent...

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  12. A chord of a circle of radius 10cm substends a right angle at the cent...

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  13. Find the area of the sector of a circle with radius 5cm and angle 30^@...

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  14. Find the area of the segment of a circle of radius 14cm if the length ...

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  15. In given figure sectors of two concentric circles of radius 7 cm and 3...

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  16. The length of minute hand of a clock is 14 cm. Find the area swept by ...

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  17. The minute hand of a clock is 12cm long. Find the area of the face of ...

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  18. The minute hand of a clock is sqrt 21cm long . Find the area described...

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  19. A horse is tied to a peg at one corner of a square shaped grass field ...

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  20. A horse is tied to one corner of a field which is if the shape of an e...

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