CTET 2 Math and Science Feb 2015 Paper

Question : 33 of 120

Marks: +1, -0

The radii of the bases of two cylinders are in the ratio of 2:3 and their heights are in the ratio of 5:3. The ratio of their volumes is

Solution:

\;\;{\;\text"Volume of cylinder"\;1}/{\;\text"Volume of cylinder"\;2}=\;\;{πr_{1}^{2}h_{1}}/{πr_{2}^{2}h_{2}}

=\;\;{π×(2)^{2}×5}/{π×(3)^{2}×3}

=\;\;{4×5}/{9×3}

=20/27

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