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A race track is in the form of a ring wh...

A race track is in the form of a ring whose outer and inner circumference are 506 m and 440 m respectively. Find the width of the track and also the area.

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The correct Answer is:
10.5 m and `4966.5 m^(2)`
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NAGEEN PRAKASHAN-AREA RELATED TO CIRCLES-Exercise 12 A
  1. A field is in the form of a circle. A fence is to be erected around...

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  2. The sum of the radii of two different circles is 18.5 cm and the diffe...

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  3. A race track is in the form of a ring whose outer and inner circumfere...

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  4. The area enclosed by the circumference of two concentric circles is 42...

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  5. Find the circumference of the circle whose area is 16 times the area o...

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  6. Calculate the circumference of a circle whose area is equal to the sum...

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  7. The diameters of two given circles are in the ratio 3 : 4 and the sum ...

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  8. The number denoted by the area of a cicle is five times the number den...

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  9. A park is in the form of a circle with radius 35m. At the centre of th...

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  10. If a square is inscribed in a circle, find the ratio of the areas of ...

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  11. Area of a circle is 61m^(2). Find the area of the greatest square cons...

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  12. The area of a circle inscribed in an equilateral triangle is 154\ c...

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  13. Prove that the area of a circular path of uniform width h surroundi...

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  14. The radius of a wheel is 77 cm, find the number of revolutions it will...

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  15. If the wheel of a bus with 50 cm radius makes 280 revolutions per minu...

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  16. A man runs with a speed of 15.84 km/hr. He completes 12 rouds of a cir...

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  17. A bucket is raised from a well by means of a rope which is wound round...

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  18. ABC is an equilateral triangle inscribed in a circle of radius 4 cm. F...

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  19. In the given figure two small circles touch each other externally at t...

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  20. 7. The kite ABCD, inscribed in a circle of fadius 7 cm, has sides of l...

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