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The radius of a circle is doubled then i...

The radius of a circle is doubled then its area becomes ……………….. Times.

A

5

B

4

C

9

D

none

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VGS PUBLICATION-BRILLIANT-TANGENTS AND SECANTS TO A CIRCLE-EXERCISE
  1. A bicycle wheel makes 75 revolutions per minute to maintain a speed of...

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  2. Angle described by hour hand in 12 hoours is ……..

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  3. Each angle in a square is ……

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  4. In the figure , the area of shaded region is …………. cm^(2).

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  5. Perimeter of semicircle is …………….. Units .

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  6. In the figure the relation among a , b and c is …………….

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  7. In the figure , a = ………….

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  8. Perimeter of sectors = ……………….

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  9. What do you observe from the below figure ?

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  10. The radius of a circle is doubled then its area becomes ……………….. Time...

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  11. In the given figure, angle APB = 60^@ and OP = 10 cm. then PA = ………….....

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  12. The maximum nuber of possible tangents that can be draw to a circle is...

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  13. Angle between the tangent and radius drawn through the point of contac...

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  14. If a circle is inscribed in a Quadrilateral then AB +CD= ………..

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  15. The angle made at the centre of a circle is …….

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  16. In the adjoint figure AC = 5 , so BC = ………….cm

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  17. The number of secant that can be drawn to a circle is ……..

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  18. The diameter of a circle is 10.2 cm then its radius is ….. Cm .

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  19. If 'r' is the radius of a semi-circle then its perimeter is ......

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  20. PA and PB are two tangents drawn to a circle with center O from an ext...

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