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26 April, 12:13

A rectangular prism has a length of 7 cm, a width of 4 cm, and a height of 2 1/2 cm.

The prism is filled with cubes that have edge lengths of 1/2 cm.

How many cubes are needed to fill the rectangular prism?

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  1. 26 April, 15:45
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    The volume of the prism = 7 * 4 * 2.5 = 70 cm^3

    the volume of one cube = (0.5) ^3 = 0.125

    Therefore the number of cubes needed to fill the prism = 70 / 0.125 = 560
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