This figure represents a box that is filled with books.

What is the volume of the box in terms of books?

Responses

4 books
4 books

20 books
20 books

60 books
60 books

120 books
120 books
A rectangular prism labeled box is made up of unit cubes. There are 5 layers, and each layer is 4 units long and 6 units wide. A second rectangular prism labeled book is beside the first prism. The second prism has 1 layers that is 2 units long and 3 units wide.

1 answer

To find the volume of the box in terms of books, we first need to calculate the volume of the box and then compare it to the volume of one book.

  1. Calculate the volume of the box: The box is a rectangular prism with:

    • 5 layers (height = 5 units)
    • Each layer is 4 units long and 6 units wide.

    Volume of the box \( V_{box} \) is calculated using the formula for the volume of a rectangular prism: \[ V_{box} = \text{length} \times \text{width} \times \text{height} = 4 \times 6 \times 5 \] \[ V_{box} = 120 \text{ cubic units} \]

  2. Calculate the volume of one book: The book itself is also a rectangular prism with:

    • 1 layer (height = 1 unit)
    • 2 units long
    • 3 units wide.

    Volume of the book \( V_{book} \) is calculated similarly: \[ V_{book} = \text{length} \times \text{width} \times \text{height} = 2 \times 3 \times 1 \] \[ V_{book} = 6 \text{ cubic units} \]

  3. Determine how many books fit in the box: To find the number of books that fit in the box, we divide the volume of the box by the volume of one book: \[ \text{Number of books} = \frac{V_{box}}{V_{book}} = \frac{120}{6} = 20 \]

Therefore, the volume of the box in terms of books is 20 books.