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The sum of the radii of two different ci...

The sum of the radii of two different circles is 18.5 cm and the difference of their circumference is 22 cm. Find their radii

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The correct Answer is:
7.5 cm and 11 cm
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NAGEEN PRAKASHAN-AREA RELATED TO CIRCLES-Exercise 12 A
  1. The circumference of a circular garder is 572 m. Outside the garden a ...

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  2. A field is in the form of a circle. A fence is to be erected around...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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