document.write( "Question 270921: Square corners, 6 cm on a side, are removed from a 36cm by 42cm piece of cardboard. the cardboard is then folded to form an open box. What is the urface area of the inside of the box? \n" ); document.write( "
Algebra.Com's Answer #198705 by ankor@dixie-net.com(22740)\"\" \"About 
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Square corners, 6 cm on a side, are removed from a 36cm by 42cm piece of cardboard.
\n" ); document.write( "the cardboard is then folded to form an open box.
\n" ); document.write( " What is the surface area of the inside of the box?
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\n" ); document.write( "Find the dimensions of the open box:
\n" ); document.write( "(36-12) by (42-12) by 6
\n" ); document.write( "24 by 30 by 6 are the dimensions
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\n" ); document.write( "SA = (24*30) + 2(24*6) + 2(30*6)
\n" ); document.write( ":
\n" ); document.write( "SA = 720 + 2(144) + 2(180)
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\n" ); document.write( "SA = 720 + 288 + 360
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\n" ); document.write( "SA = 1368 sq/cm \n" ); document.write( "
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