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sanjual bobbal

· started a discussion

· 1 Months ago

proper solution (Question: 188632.0 )

please give the proper solution of it

Question:
If the ratio of the volumes of two right circular cones is 2 : 3 and the ratio of the radii of their bases is 1 : 2, then the ratio of their heights will be –
Options:
A) 3 : 4
B) 8 : 3
C) 4 : 3
D) 3 : 8
Solution:
Ans: (b) Ratio of volumes of two right circular cone  

= 2 : 3

Ratio of Radii of their base = 1 : 2

So, ratio of their heights = \(\cfrac{2}{(1)^2} : \cfrac{3}{(2)^2} \)

= 8 : 3 

NAMI

· commented

· 1 Months ago

h is directly proportional to v/r^2.
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