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Fu · Answer 1 · 2016-05-25T10:15:41+0000

For cylinders to be similar, the ratio between their height and radius must be equal.Our cylinder's ratio is :

$\frac { length }{ radius } =\frac { 15 }{ 3 } \\ =5$

The only cylinder with same ratio is the one at the choice B.

$\frac { length }{ radius } \frac { 25 }{ 5 } =5$

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