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A right circular cone is 3.6 cm high and...

A right circular cone is 3.6 cm high and radius of its base is 1.6 cm. It is melted and recast into a right circular cone with radius of its base as 1.2 cm. Then the height of the cone {in cm) is-
एक लंब-वृत्तीय शंकु की ऊँचाई 3.6 सेमी ओर उसके आधार की त्रिज्या 1.6 सेमी है। उसको पिघला कर उसे 1.2 सेमी आधार त्रिज्या वाले लंब-वृत्तीय शंकु में ढाला गया है। तदनुसार, उस नए शंकु कौ ऊँचाई कितने सेमी होगी?

A

3.6

B

4.8

C

6.4

D

7.2

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CHAMPION PUBLICATION-2013 TIER-II PAPER(21)-EXERCISE
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  6. The volume of a conical tent is 1232 sq. m and the area of its base is...

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  10. A rectangular block of metal has dimensions 21cm, 77 cm and 24 cm the ...

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  11. If a right circular cone of height 24 cm has a volume of 1232 cm^3, th...

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  15. How many tiles, each 4 decimetre square, will be required to cover the...

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  16. If the surface areas of two spheres are in the ratio 4:9 , then the ra...

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  17. If x= y = 333 and z = 334, then the values of x^3 + y^3 +z^3-3xyz is- ...

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  18. If ( x - a^(2))/( b + c) +( x - b^(2))/( c + a) + (x - c^(2))/( a + b...

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  19. If ( x - a) ( x - b) = 1 and a - b + 5 = 0 , then the value of ( x -...

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  20. If sqrtx= sqrt3-sqrt5, then the value of x^2-16x+6 is : यदि sqrtx= s...

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