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A cube has side length a. The side lengths are decreased to 40% 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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A cube has side length a. The side lengths are decreased to 40% of their original size. Write an expression in simplest form for the volume of the new cube in terms of a.

User Zswqa
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V=a ^(3) originally. Then you reduces the side lengths a so it will be
V=( (2)/(5) a)^(3) = (8)/(125)a^(3)
Just note that 40% is the same as 2/5.
User Yamini Chhabra
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