SOLUTION: The weight of a liquid varies directly as it's volume V. If the weight of the liquid in a cubical container 3 cm on a side is 81g, find the weight of the liquid in a cubical conta

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Question 522767: The weight of a liquid varies directly as it's volume V. If the weight of the liquid in a cubical container 3 cm on a side is 81g, find the weight of the liquid in a cubical container 5cm on a side?
My instructor is having us solve these problems with Direct Variations using the formula y=kx
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The weight of a liquid varies directly as it's [sic] volume V. If the weight of the liquid in a cubical container 3 cm on a side is 81g, find the weight of the liquid in a cubical container 5cm on a side?
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Volume is a function of the cube of the side of a cube
81:3^3::W:5^3
27W = 81*125
W = 375 g
Some very dense water.
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PS it's = it is