document.write( "Question 1161647: The surface area of a cube is 864 cm². What is the length of one of its edges? \n" ); document.write( "

Algebra.Com's Answer #785248 by ikleyn(52879) $\"\"$ $\"About$

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document.write( "Hint N 1.  A cub has 6 congruent faces. They are squares.\r\n" );
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document.write( "           So, find the area of one (of each) square face, first.\r\n" );
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document.write( "Hint N 2.  The area of a square is the square of its side.\r\n" );
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document.write( "           Knowing the area of the face square, find its side.\r\n" );
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