How to write an expression for two-fifths of the cube of a number?

1 Answer
EZ as pi
Aug 15, 2016

2/5 xx x^3

Explanation:

Define your number first.
Let the number be x

The cube of a number is x^3

Now we are finding a fraction of the cube of the number:

"Half of the cube" would be 1/2 xx x^3

"Two thirds of the cube" would be 2/3 xx x^3

"Two fifths of the cube" is 2/5 xx x^3

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