document.write( "Question 552027: What is the missing length in a box with 1480 suface area and 18 and 10 as two of the side lengths \n" ); document.write( "
Algebra.Com's Answer #360193 by ankor@dixie-net.com(22740)\"\" \"About 
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What is the missing length in a box with 1480 surface area and 18 and 10 as two of the side lengths
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\n" ); document.write( "Formula for surface area of a box: S.A. = 2(L*W) + 2(L*H) + 2(W*H)
\n" ); document.write( "Let L = 18
\n" ); document.write( "Let W = 10
\n" ); document.write( "Let H = the unknown value
\n" ); document.write( "Given the surface area as 1480:
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\n" ); document.write( "2(18*10) + 2(18H) + 2(10h) = 1480
\n" ); document.write( "Simplify, divide thru by 2
\n" ); document.write( "(18*10) + (18H) + (10h) = 740
\n" ); document.write( "180 + 28H = 740
\n" ); document.write( "28H = 740 - 180
\n" ); document.write( "28H = 560
\n" ); document.write( "H = \"560%2F28\"
\n" ); document.write( "H = 20 units is the missing length
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\n" ); document.write( "Check the solution in the original S.A. equation.
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