document.write( "Question 1042822: how many 60lb bags of concrete do i need to make a wall 15ftlg x15in high x 3in thick \n" ); document.write( "
Algebra.Com's Answer #657863 by jim_thompson5910(35256)\"\" \"About 
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1 ft = 12 inches
\n" ); document.write( "15*1 ft = 15*12 inches
\n" ); document.write( "15 ft = 180 inches\r
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\n" ); document.write( "\n" ); document.write( "The wall of \"15 ft x 15 in x 3 in\" is the same dimensions as the wall of \"180 in x 15 in x 3 in\"\r
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\n" ); document.write( "\n" ); document.write( "Use the volume formula
\n" ); document.write( "V = L*W*H
\n" ); document.write( "V = 180*15*3
\n" ); document.write( "V = 8100\r
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\n" ); document.write( "\n" ); document.write( "The volume of the wall is 8100 cubic inches\r
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\n" ); document.write( "\n" ); document.write( "Here's where I can't keep going. I don't know how many cubic inches one bag can make. You'll have to look at each bag to determine this. That kind of information should be given. \r
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\n" ); document.write( "\n" ); document.write( "Let's say for example that each bag can make 100 cubic inches of concrete. That would mean you need 8100/100 = 81 bags. Replace \"100\" with whatever the bag states. If you get a decimal result, round up (not down) to the nearest whole number. \n" ); document.write( "
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