GMAT Math : Prisms
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Example Questions
Example Question #3 : Dsq: Calculating The Length Of An Edge Of A Prism
Find the height of a box used to ship a computer, given the following:
I) The computer, along with all the cushioning, will take up a space of 
II) The width of the box will be 
Statement I is sufficient to answer the question, but statement II is not sufficient to answer the question.
Statement II is sufficient to answer the question, but statement I is not sufficient to answer the question.
Either statement is sufficient to answer the question.
Neither statement is sufficient to answer the question. More information is needed.
Both statements are needed to answer the question.
Neither statement is sufficient to answer the question. More information is needed.
Find the height of a box used to ship a computer, given the following:
I) The computer, along with all the cushioning, will take up a space of
II) The width of the box will be 
Begin by recalling the volume of a rectangular prism formula:
Where l,w and h are length, width and height.
Next, use II) to set up a relationship between w and l
Then, use the voume formula:
As you can see, we still have two unknowns, and no way of finding either.
Therefore, we do not have information.
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