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If the radius of a circle is 3 times tha...

If the radius of a circle is 3 times that of another circle, find the ratio of their areas.

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The correct Answer is:
`3:4`
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ICSE-PERIMETER AND AREA -EXERCISE 17.2
  1. Find the area of a quadrilateral which has one diagonal measuring 22 c...

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  2. The ara of a quadrilateral is 780 sq. cm One of its diagonals measures...

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  3. In Delta ABC, the perependicular from A BC meets BC at D such that BD ...

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  4. The perpendicular from P and QR in the triangle jPQR meets QR at S. Al...

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  5. In Delta ABC,AD and CE are perpendiculars from A and C on the opposite...

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  6. In Delta LMN, NT bot LM. Area of Delta LMN =72 sq. m and NT = 9 cm. ...

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  7. IF the circumference of a circle is 52.8 cm, find its radius.

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  8. If the perimeter of a semicircular plate is 36 cm, find its radius.

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  9. The ratio of the circumference of two circles is 4:5. Find the ratio o...

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  10. If the radius of a circle is increased three times, by how many times ...

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  11. What length of rope is required, if 6 rounds of rope are needed to put...

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  12. The minute hand of a clock is 3.5 cm long. What distance will its tip ...

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  13. Find the area of a circular park with diameter 70 m.

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  14. If the ara of a circular field is 1386 sw. m , find its radius.

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  15. If the ratio of the areas of two circles is 9:16, find the ratio of th...

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  16. If the radius of a circle is 3 times that of another circle, find the ...

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  17. If the area of a circular pond is 49pisq. ft what will be the cost of ...

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  18. IF the circumference of a circular plate is 12pi units, what would be ...

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  19. A circular track is such that its inner circumference is 264 m. If the...

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  20. A circular plot of land is of radius 49 m. A path 3.5 m wide needs to ...

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