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The diameter of the base of a right circ...

The diameter of the base of a right circular cone is 6 cm and height is 4 cm . Then the curved surface area of the cone is

A

`15pi` sq-cm

B

`30 pi` sq-cm

C

`40 ` sq-cm

D

`55` sq-cm

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The correct Answer is:
A
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CALCUTTA BOOK HOUSE-RIGHT CIRCULAR CONE -Exercise 1
  1. The diameter of the base of a right circular cone is 6 cm and height i...

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  2. The ratio of the radius of the base and height of a right circular con...

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  3. The ratio of the heights of two right circular cones is 1:3 and the ra...

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  4. The height of a right circular cone and its diameter of base equal, th...

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  5. If the area of the base of a right circular cone be 4pi r^2 sq-cm and ...

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  6. The ratio of the diameters of the bases of two right circular cones is...

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  7. If the height of a right circular cone be 4.8 cm and its diameter of b...

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  8. If the circumference of the base of a right circular cone be (264)/(7)...

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  9. The radius of base and height of a right cone are equal . Keeping radi...

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  10. If the total surface area of a right circular cone of radius 3cm be 24...

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  11. The curved surface area of a right circular cone of height h unit and...

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  12. If the whole surface area of a right circular cone be A1 sq- unit andi...

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  13. If the radius of base and height of a right circular cone be increased...

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  14. The slant height of a right circular cone of radius of base 4 unit and...

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  15. The curved surface area of a right circular cone of height 3 times of ...

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  16. The length of slant height of a right circular cone is always greater ...

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  17. Between the 2 surfaces of a closed right circular cone, the one is pla...

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  18. The base of a right circular cone may not be circular.

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  19. if the height and the radius of base of a right circular cone be equal...

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  20. The volume of a right circular cone of radius of base r unit and of he...

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