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 Question from matt: i need to know how many gallons a 16 inch square box will hold

Hi Matt,

Do you have a box in the shape of a cube that measures 16 inches on each side?

If so the volume of the box is $15 \times 16 \times 16 = 4096$ cubic inches. There are 231 cubic inches in a US gallon so this box contains $\frac{4096}{231} = 17.7$ gallons.