document.write( "Question 229540: What is the length of the edge of a cube if, after a slice 1 inch thick is cut from one side, the volume remaining is 294 cubic inches? \n" ); document.write( "
Algebra.Com's Answer #170158 by vleith(2983)![]() ![]() ![]() You can put this solution on YOUR website! Not sure of an easy way to do this one other than trial and error or plotting \n" ); document.write( "Let l be the original length of one side \n" ); document.write( "After cutting off one inch, the new volume is 294 \n" ); document.write( "So \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Let's try 5 \n" ); document.write( "Does 125 - 25 = 294? Nope, too small \n" ); document.write( "Try 10 \n" ); document.write( "Does 1000 - 100 = 294? Nope too big \n" ); document.write( "Try 7 \n" ); document.write( "Does \n" ); document.write( "343 - 49 = 294? Yepper. So the answer is 7.\r \n" ); document.write( "\n" ); document.write( "You could also plot \n" ); document.write( "See this URL \n" ); document.write( "http://www.wolframalpha.com/input/?i=l^3+-+l^2+%3D+294\r \n" ); document.write( "\n" ); document.write( "There may be a more elegant path using algebra proper, but sometimes the easiest path to a solution isn't the most elegant \n" ); document.write( " |