document.write( "Question 290732: The total surface area of a cube is 10,648 centimeters squared. What is the length of a diagonal that is not a diagonal of a face?\r
\n" ); document.write( "\n" ); document.write( "Note: The surface area of a cube is 6e squared, where e is the edges of the cube.\r
\n" ); document.write( "\n" ); document.write( "Please help, thank you!
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Algebra.Com's Answer #210406 by ankor@dixie-net.com(22740)\"\" \"About 
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The total surface area of a cube is 10,648 centimeters squared. What is the length of a diagonal that is not a diagonal of a face?
\n" ); document.write( "Note: The surface area of a cube is 6e squared, where e is the edges of the cube.
\n" ); document.write( ":
\n" ); document.write( "Find the diagonal of the face (c)
\n" ); document.write( "c^2 = 2e^2
\n" ); document.write( ";
\n" ); document.write( "Diagonal (d) of opposite corners (not a diagonal of a face)
\n" ); document.write( "Using the diagonal of the face and one edge
\n" ); document.write( "d^2 = 2e^2 + e^2
\n" ); document.write( "d^2 = 3e^2
\n" ); document.write( "d = \"sqrt%283e%5E2%29\"
\n" ); document.write( "Find e^2
\n" ); document.write( "e^2 = \"10648%2F6\"
\n" ); document.write( "e^2 = 1774.67
\n" ); document.write( "then
\n" ); document.write( "d = \"sqrt%283%2A1774.67%29\"
\n" ); document.write( "d = 72.9658
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