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A cylinder and a cone have equal radii o...

A cylinder and a cone have equal radii of their bases and equal heights. If their curved surface areas are in the ratio 8: 5, the ratio of their radius and height is
एक बेलन ओर एक शंकु के आधारों की त्रिज्याएँ बराबर है और ऊंचाई बराबर है। यदि उनके वक्र पृष्ठ क्षेत्रफल 8 : 5 के अनुपात में है, तो उनकी त्रिज्या ओर ऊँचाई का अनुपात है-

A

`1:2`

B

`1:3`

C

`2:3`

D

`3:4`

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CHAMPION PUBLICATION-2011 TIER-II PAPER(23)-EXERCISE
  1. The ratio of radii of two right circular cylinders is 2 : 3 and their ...

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  2. A solid cylinder has total surface area of 462 sq. cm. Its curved surf...

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  3. A cylinder and a cone have equal radii of their bases and equal height...

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  4. A solid is hemispherical at the bottom and conical above. If the surfa...

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  5. Base of a right prism is an equilateral triangle of side 6 cm. If the ...

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  6. If a+1/a+2=0, then the value of a^37-1/a^100 is यदि a+1/a+2=0, तो ...

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  7. The value of k for which the graph of (k- 1)x+ y-2= 0 and (2-k)x-3y+ ...

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  8. The length of a shadow of a vertical tower is 1/sqrt3 times of its hei...

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  9. The graph of x+ 2y= 3 and 3x-2y = 1 meet the Y-axis at two points havi...

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  10. If x+1/(16x)=1, then the value of 64x^3+1/(64x^3) is यदि x+1/(16x)=...

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  11. If a,b, are three non-zero real numbers such that a + b + c =0, and b ...

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  12. If a ^(4) +a ^(2) b ^(2) + b ^(2) = 8 and a ^(2) + ab + b ^(2) = 4, th...

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  13. If a = 25,b=15, c=-10, then the value of (a^3+b^3+c^3-3abc)/((a-b)^2+(...

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  14. A, B, C are three point on a circle. The tangent at A meets BC produce...

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  15. If the length of a chord of a circle C at a distance of 12 cm from the...

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  16. In triangle ABC, P and Q are the middle points of the sides AB and AC ...

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  17. If O is the circumcenter of triangle ABC and angle OBC = 35^@, then th...

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  18. If I is the incentre of triangle ABC and angle BIC = 135^@, then trian...

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  19. If sin^2 alpha+ sin^2 beta=2, then the value of (cos frac (alpha+beta)...

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  20. Find the value of cot""(pi)/20.cot""(3pi)/20.cot""(5pi)/20.cot""(7pi)/...

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