document.write( "Question 526495: an open tin box, 21cm long,9cm wide,8cm high,is fitted with a tin lid which overlaps to the depth of 1cm all around. what is the total area of the tin sheeting used for the box and the lid? \n" ); document.write( "
Algebra.Com's Answer #348611 by ankor@dixie-net.com(22740)\"\" \"About 
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an open tin box, 21cm long,9cm wide,8cm high,is fitted with a tin lid which overlaps to the depth of 1cm all around. what is the total area of the tin sheeting used for the box and the lid?
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\n" ); document.write( "The dimensions of the top. add 2 cm to length and width
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\n" ); document.write( "Find the surface area of five sides of the box plus the top
\n" ); document.write( "S.A. = (21*9) + 2(21*8) + 2(9*8) + (23*11)
\n" ); document.write( "S.A. = 189 + 336 + 144 + 253
\n" ); document.write( "S.A. = 922 sq/cm
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