document.write( "Question 174502: I want to know how many bricks and cement it would take to build the following brick wall: the bricks are 16 inches by 8 inches, and the wall would measure 6 ft high by 200 ft long... \n" ); document.write( "
Algebra.Com's Answer #129530 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
The previously posted answer to this problem is WRONG!! You can't build a wall that BIG with 113 bricks!! I worked the problem in feet. The height of the wall is 6 feet. If the bricks are laid with lengthwise, the height of each brick would be 8 inches or \"2%2F3+\" of a foot.\r
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\n" ); document.write( "\n" ); document.write( "\"6\"divided by \"2%2F3\"
\n" ); document.write( "\"6%2A%283%2F2%29=+9\" bricks high\r
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\n" ); document.write( "\n" ); document.write( "If the length of the wall is 200 feet, and the length of each brick is 16 inches or \"4%2F3\" feet, then the length of the wall is
\n" ); document.write( "\"200\" divided by \"4%2F3\"
\n" ); document.write( "\"200+%2A%283%2F4%29=+150\" bricks long.\r
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\n" ); document.write( "\n" ); document.write( "The number of bricks needed is 9 * 150 = 1350 bricks, not allowing for any wasted bricks.\r
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\n" ); document.write( "\n" ); document.write( "The previously posted answer is INCORRECT because of the most common error perimeters, areas, and volumes!! When a conversion was made from FEET to INCHES, it was noted that there are 12 INCHES in 1 FOOT! HOWEVER, in this problem you are dealing with AREA, so you must use SQUARE INCHES and SQUARE FEET!! This should have been 144 SQUARE INCHES in 1 SQUARE FOOT! In fact, if you multiply the WRONG ANSWER times 12, you get approximately the CORRECT ANSWER (except for the round off error that occurred!!\r
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\n" ); document.write( "\n" ); document.write( "So, that's my FINAL ANSWER: 1350 BRICKS!!\r
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