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9 May, 10:26

A right rectangle prism has a length of 2 1/2 feet, a width of 3 feet, and a height of 1 1/2 feet. Unit cubes with side lengths of 1/2 foot are added to completely fill the prism with no space remaining. What is the volume, in cubic feet, of the right rectangular prism?

How many 1/2 foot unit cubes can be added to fill the prism completely?

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  1. 9 May, 12:00
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    Volume = 11 1/4 feet cubed

    90 cubes can be added to fill the prism.

    Step-by-step explanation:

    (L) (W) (H) = volume

    (2 1/2) (3) (1 1/2) = 11 1/4 ft cubed

    1 cube is 1/2 a foot so 2 1/2 ft is 5 cubes, 3 ft is 6 cubes, and 1 1/2 ft is 3 cubes.

    (5) (6) (3) = 90 cubes
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