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Re: If the volume of cube A is twice that of cube B, the side of [#permalink]
23 Oct 2014, 07:39

Concept is Cube Cube _ 6 Sides , Volume is S^3 , Given 2 Cubes S^3 = 2 x S^3 ???Confused Changing the variables as two Different Cubes a^3 = 2 b^3 ( A is twice that of B) a = ? ?? a x a^2 = 2 x b^3 a = 2 x b^3 /a^2 ????? Next? ?

Re: If the volume of cube A is twice that of cube B, the side of [#permalink]
23 Oct 2014, 21:28

kanusha wrote:

Concept is Cube Cube _ 6 Sides , Volume is S^3 , Given 2 Cubes S^3 = 2 x S^3 ???Confused Changing the variables as two Different Cubes a^3 = 2 b^3 ( A is twice that of B) a = ? ?? a x a^2 = 2 x b^3 a = 2 x b^3 /a^2 ????? Next? ?

Is my thought process is right??

Instead of taking 2 variables, just try plugins... Please look at posts above _________________

Re: If the volume of cube A is twice that of cube B, the side of [#permalink]
23 Oct 2014, 21:39

1

This post received KUDOS

kanusha wrote:

Concept is Cube Cube _ 6 Sides , Volume is S^3 , Given 2 Cubes S^3 = 2 x S^3 ???Confused Changing the variables as two Different Cubes a^3 = 2 b^3 ( A is twice that of B) a = ? ?? a x a^2 = 2 x b^3 a = 2 x b^3 /a^2 ????? Next? ?

Is my thought process is right??

Here you have to find the relation between Side od Cube A and Side of Cube B

Let Sa = side of cube A And Sb = Side of cube B

given, Va = 2* Vb

(Sa^3) = 2* (Sb^3)--------------- Till this step you are correct. See the below explanation to clear the doubt.

Taking Cube root on both sides

Sa = 2^(1/3) * Sb

Therefore answer is B

gmatclubot

Re: If the volume of cube A is twice that of cube B, the side of
[#permalink]
23 Oct 2014, 21:39

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