The formula which we can use to calculate density of books in box is
Density = number of books / volume of shelf
What is Density?
The density of a substance is its mass per unit volume. The symbol most often used for density is ρ although the Latin letter D can also be used.
Here, We know that,
Density = mass/volume,
so the number of books is the mass and the volume of the shelf is the volume for this equation.
Thus, the formula which we can use to calculate density of books in box is Density = number of books / volume of shelf.
Learn more about Density from:
https://brainly.com/question/15164682
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