document.write( "Question 875465: What size cubic blocks would you use to make a rectangular prism that is 2 1/2in by 3 1/2in by 4in?
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Algebra.Com's Answer #528203 by Theo(13342)\"\" \"About 
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i would probably use half inch cubes because 3 and 1/2 is equal to 5/2 and 4 and 1/2 is equal to 7/2 and 4 is equal to 8/2.\r
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\n" ); document.write( "\n" ); document.write( "this way each cube can fit into each dimension without having to break the cube up in order to make it fit the dimension.\r
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\n" ); document.write( "\n" ); document.write( "you could use smaller cubes but that would not be necessary since 1/2 inch cubes does the job nicely without requiring more cubes than necessary.\r
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\n" ); document.write( "\n" ); document.write( "your total volume is equal to 5/2 * 7/2 * 8/2 = 280/8 cubic inches.\r
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\n" ); document.write( "\n" ); document.write( "the volume of a 1/2 inch cube is equal to 1/2 * 1/2 * 1/2 = 1/8 cubic inches.\r
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\n" ); document.write( "\n" ); document.write( "you would require 280 of them because 280/8 is equal to 280 * 1/8 cubic inches.\r
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\n" ); document.write( "\n" ); document.write( "consider that a length of 2 and 1/2 requires 5 of them and a length of 3 and 1/2 requires 7 of them and a length of 4 requires 8 of them and the total number of cubes required is 5 * 7 * 8 = 280.\r
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