document.write( "Question 709234: how many bricks,each of dimensions 20cm*12cm*9cm,will be required to build a wall 12m long 72cm thick 4m hight. \n" ); document.write( "
Algebra.Com's Answer #436461 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( " bricks,each of dimensions \"20cm%2A12cm%2A9cm\", required to build a wall \"a=12m\" long, \"b=72cm\" thick \"h=4m+\" height:\r
\n" ); document.write( "\n" ); document.write( "first find a volume of a wall: \"V%5Bw%5D=a%2Ab%2Ah\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D=12m%2A72cm%2A4m\".......\"b=72cm=%2872%2F100%29m=0.72m\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D=12m%2A0.72m%2A4m\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D=34.56m%5E3\"\r
\n" ); document.write( "\n" ); document.write( "now find a volume of a brick dimensions \"V%5Bb%5D=20cm%2A12cm%2A9cm\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bb%5D=0.20m%2A0.12m%2A0.09m\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bb%5D=0.00216m%5E3\"\r
\n" ); document.write( "\n" ); document.write( "now divide a volume of a wall by a volume of a brick\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D%2FV%5Bb%5D=34.56m%5E3%2F0.00216m%5E3\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D%2FV%5Bb%5D=34.56cross%28m%5E3%29%2F0.0021cross%286m%5E3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D%2FV%5Bb%5D=34.56%2F0.00216\"\r
\n" ); document.write( "\n" ); document.write( "\"V%5Bw%5D%2FV%5Bb%5D=16000\"....... bricks required to build a wall
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