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The volume of a right circular cone is e...

The volume of a right circular cone is equal to the volume of a right circular cylinder. The height and the radius of the cylinder are 9 cm and 20 cm respectively. If the height of the cone is 108 cm, then its radius (in cm) is-
लंब वृत्ताकार शंकु का आयतन लंब वृत्ताकार सिलेंडर के आयतन बराबर है। सिलेंडर की ऊँचाई और त्रिज्या क्रमशः 9 सेमी और 20 सेमी हैं। यदि शंकु की ऊचाई 108 सेमी है, तो उसकी त्रिज्या कितनी (सेमी में) होगी?

A

20

B

10

C

12

D

14

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CHAMPION PUBLICATION-2014 TIER-II PAPER(18)-EXERCISE
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  2. If the surface areas of two spheres are in the ratio 9:16, the ratio o...

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  3. The volume of a right circular cone is equal to the volume of a right ...

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  4. If the area of the base of a cone is increased by 100%, then th volume...

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  5. The length, breadth and height of a wooden box with a lid are 10 cm, 9...

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  6. Perimeter of an equilateral triangle is equal to the circumference of ...

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  7. A right circular cone and a right circular cylinder have the same base...

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  8. A sphere and a hemisphere have the same surface area. The ratio of the...

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  9. From any point inside an equilateral triangle, the lengths of perpendi...

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  10. The area of a circle and a square are same. The ratio of the diagonal ...

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  11. ABCD is a square inscribed in a circle of radius r. Then the total are...

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  12. The length of the two, parallel sides of a trapezium are 28 cm and 40 ...

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  13. The diameters of the internal and external surfaces of a hollow spher...

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  14. The volume of a metallic cylindrical pipe is 7480 cm^3. If its length ...

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  15. A cylindrical vessel of diameter 24 cm contains some water. If two sp...

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  16. If 2x = sqrta + (1)/( sqrta) , a gt 0 then the volume of (sqrt (x ^(2...

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  17. If a,b, c are real and a^(2) + b ^(2) + c ^(2) = 2 (a - b - c) -3, the...

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  18. If (a)/(b+c)=(b)/(c+a)=(c)/(a+b) and a+b+cne0 then the value of (b)/(a...

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  19. If a = 2 + sqrt3, then the value of (a ^(6) + a ^(4) + a ^(2) + 1)/(a ...

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  20. If x = sqrt5 + sqrt3 and y = sqrt5 - sqrt3, then the value of x ^(4) -...

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