Question
If the ratio of the heights of two cones is 1: 4 and the
diameters are in ratio 4: 5 then what is the ratio of their volumes?Solution
Given- h1=1 h2=4 r1=4/2=2 r2=5/2=2.5 
The ratio of their volumes – 
=4:6.25×4 =100:625 =4:25
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