A sphere of radius 21 cm is melted and reshaped into a cone with a circular base of the same radius as the sphere. What is the height of the cone formed?
ATQ, Radius of the cone = radius of the sphere = 21 cm Let, the height of the cone be ‘h’ cm. ATQ, Volume of sphere = Volume of cone 
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The sum of three numbers is 184. If the ratio of the first to the second is 3:4 and that of second to the third is 8:9 then the second number is?
