40 US gallons in US customary cups

Conversion

40 US gallons is equivalent to 640 US customary cups.[1]

Conversion formula
How to convert 40 US gallons to US customary cups?

We know (by definition) that: 1⁢usgallon ≈ 16⁢uscup

We can set up a proportion to solve for the number of US customary cups.

1 ⁢ usgallon 40 ⁢ usgallon ≈ 16 ⁢ uscup x ⁢ uscup

Now, we cross multiply to solve for our unknown x:

x ⁢ uscup ≈ 40 ⁢ usgallon 1 ⁢ usgallon * 16 ⁢ uscup → x ⁢ uscup ≈ 640 ⁢ uscup

Conclusion: 40 ⁢ usgallon ≈ 640 ⁢ uscup

40 US gallons is equivalent to 640 US customary cups

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 0.0015625 times 40 US gallons.

It can also be expressed as: 40 US gallons is equal to 1 0.0015625 US customary cups.

Approximation

An approximate numerical result would be: forty US gallons is about six hundred and forty US customary cups, or alternatively, a US customary cup is about zero times forty US gallons.

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.

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