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23 July, 16:41

A rectangular prism is 4 units by 2 1/2 units by 1 1/2 units. How many cubes with a side length of 1/2 unit will completely fill the prism?

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  1. 23 July, 16:52
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    V prism = 4 * (5/2) * (3/2) = 15 units^3;

    V cube = (1/2) ^3 = 1/8 units^3;

    15 : (1/8) = 15 * 8 = 120 cubes;
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