document.write( "Question 1070915: Solve this problem using the proper formula.\r
\n" ); document.write( "\n" ); document.write( "A lot is in the shape of a trapezoid. The sum of the bases is 280 feet. If the area of the lot is 8,400 square feet, what is the distance across the lot, i.e., the altitude of the figure?\r
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Algebra.Com's Answer #685895 by addingup(3677)\"\" \"About 
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Area = ((a+b)/2)*h
\n" ); document.write( "(280/2)*h = 8,400
\n" ); document.write( "140*h = 8,400
\n" ); document.write( "h = 8,400/140
\n" ); document.write( "h = 60
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