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VikaD [51]
3 years ago
6

A rectangular prism has a length of 20 in., a width of 2 in., and a height of 3

7B4%7D" id="TexFormula1" title="\frac{1}{4}" alt="\frac{1}{4}" align="absmiddle" class="latex-formula"> in.
The prism is filled with cubes that have edge lengths of \frac{1}{4} in.

How many cubes are needed to fill the rectangular prism?
Mathematics
1 answer:
vodomira [7]3 years ago
7 0

Calculate the volume of both the prism and the cubes:

Prism:

Volume = 20 x 2 x 3.25 = 130 cubic inches.

Volume of cube:

Volume = S^3 = 1/4^3 = 1/64 ( 0.015625)

Divide the area of the prism by the area of the cube:

130 / 1/64 = 130 * 64 = 8,320

It would take 8,320 cubes to fill the prism.

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