Question

The radii of two cones are in the ratio of 2:3 and their heights are in the ratio of 7:3.

Find out the ratio of their volumes.

:)

Thanks ...

Answer 1

im sry 2^2is 4 and 3^2 is 9 therefore ratio will be 28/27

Answer 2

HI friend,
Ratio of radii= 2:3
Let radius of 1st cone = 2x
Let Radius of 2nd cone= 3x
Let height of 1st cone  = 7x 
Let height of 2nd cone =3x
 
ration in volumes =1/3 π(2x)²7x/1/3π(3x)²3x
                            =4x²7x/9x²3x
                            =28/27
so ratio = 28:27
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