document.write( "Question 108457: Roofing: A flat roof 28 ft long and 16 ft wide has a 3 in depth of water sittin on it. What is the weight of the watr on the roof? Water weighs 62.5 lb/cu ft. \n" ); document.write( "
Algebra.Com's Answer #79101 by checkley71(8403)\"\" \"About 
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28*16*.25=112 CUBIC FEET.
\n" ); document.write( "112*62.5=7,000 POUNDS.
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