document.write( "Question 918552: A dam is 40 ft. long, 12 ft. high, 7 ft. wide at the bottom, and 4 ft. wide at the top. How many cubic yards of material were used in constructing it? \n" ); document.write( "
Algebra.Com's Answer #557114 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Area of the face = \"%28%287%2B4%29%2F2%2912\"= 66ft^2
\n" ); document.write( "V = \"66%2AL+=+66ft%5E2%2A40ft\" = 2640 ft^3
\n" ); document.write( "(sweeping the face the length of 40ft)
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