document.write( "Question 1058652: A rectangular gutter open at the top is to be made from a galvanized steel that is 36 inches wide by turning the sides up. Express the area of the cross section as a finction of the height, h, of the gutter, and find the domain \n" ); document.write( "
Algebra.Com's Answer #673801 by ankor@dixie-net.com(22740)\"\" \"About 
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A rectangular gutter open at the top is to be made from a galvanized steel that is 36 inches wide by turning the sides up.
\n" ); document.write( " Express the area of the cross section as a function of the height, h, of the gutter, and find the domain
\n" ); document.write( ":
\n" ); document.write( "looks like this
\n" ); document.write( "h|__|h
\n" ); document.write( ":
\n" ); document.write( "Width = (36-2h)
\n" ); document.write( ":
\n" ); document.write( "Area = height * width
\n" ); document.write( "f(h) = h(36-2h)
\n" ); document.write( "f(h) = 36h - 2h^2
\n" ); document.write( "Find the h when
\n" ); document.write( "36h - 2h^2 = 0
\n" ); document.write( "divide both sides by 2h
\n" ); document.write( "18 - h = 0
\n" ); document.write( "h = 18, therefore h < 18
\n" ); document.write( ":
\n" ); document.write( "Domain: >0 and < 18 \n" ); document.write( "
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