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An illustration shows a 3 D rectangular cuboid segmented into 5 rows by 2 columns of blocks. The length is start fraction 1 over 2 end fraction, width is start fraction 1 over 4 end fraction, and height is start fraction 5 over 4 end fraction.

Multiply the edge lengths of a right rectangular prism with length 1/2 m, width 1/4 m, and height 5/4 m to show that the product is the same as the volume found by packing the prism with 10 unit cubes with an edge length of 1/4 m. What is the volume of the prism?

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cubic meters
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1 answer

To find the volume of the rectangular prism, we can simply multiply the length, width, and height together:

Volume = (1/2) * (1/4) * (5/4) = 5/32 cubic meters

Alternatively, we can also calculate the volume by packing the prism with unit cubes, which have an edge length of 1/4 m. Since the prism is segmented into 5 rows by 2 columns, we can calculate the total number of cubes as 5 * 2 = 10 unit cubes.

Therefore, the volume of the prism is indeed 10 unit cubes or 10 * (1/4)^3 = 10 * 1/64 = 5/32 cubic meters.