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The ratio of the radii of two circles is...

The ratio of the radii of two circles is `2: 5.` What is the ratio of their circumference?

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RD SHARMA-MENSURATION-2-All Questions
  1. Find the circumference of a circle whose diameter is 42 cm.

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  2. Find the diameter of a circle whose circumference is 15.7 cm.

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  3. The ratio of the radii of two circles is 2: 5. What is the ratio of th...

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  4. A piece of wire in the form of a rectangle 8.9 cm long and 5.4 cm b...

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  6. The diameter of the wheel of a car is 77 cm. How many revolutions w...

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  7. There is a circular pond and foot-path runs along its boundary. A m...

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  8. The circumference of a circle exceeds the diameter by 30 cm. Find t...

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  9. A race track is in the form of a ring whose inner circumference is ...

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  10. The inner circumference if a circular track is 220m. The track is 7m ...

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  11. Find the circumference of a circle whose radius is a)14 cm    (b) 10...

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  12. Find the circumference of a circle whose diameter is (a)7 cm     (b)...

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  13. Find the radius of a circle whose circumference is (a)52.8 cm   (b) ...

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  14. Find the diameter of a circle whose circumference is (a)12.56 cm    ...

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  15. The ratio of the radii of two circles is 3: 2. What is the ratio of th...

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  16. A wire in the form of a rectangle 18.7 cm long and 14.3 cm wide is ...

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  17. A piece of wire is bent in the shape of an equilateral triangle of ...

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  18. The diameter of a wheel of a car is 63 cm. Find the distance travel...

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  19. The diameter of a wheel of a car is 98 cm. How many revolutions wil...

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  20. The moon is about 384400 km from the earth and its path around the ...

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