ihatemath9999 ihatemath9999

18-05-2017
Mathematics

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A cube has side length a. The side lengths are decreased to 20% of their original size. Write an expression in simplest form for the volume of the new cube in terms of a.

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paulancka paulancka

19-05-2017

side lengths are decreased to 20% of their original size - it means that the new side is 80% of a. Let's call it side b.
b=.8a
V = (.8a)^3 = .512a^3

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