document.write( "Question 964430: A rhombus has sides of lenght 10cm. One of its diagonals is twice as long as the other. Calculate the length of the shorter diagonal to the nearestt mm. \n" ); document.write( "
Algebra.Com's Answer #802542 by CubeyThePenguin(3113)\"\" \"About 
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length of short diagonal = x\r
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\n" ); document.write( "\n" ); document.write( "side = sqrt((x/2)^2 + x^2) = 10\r
\n" ); document.write( "\n" ); document.write( "5x^2/4 = 100\r
\n" ); document.write( "\n" ); document.write( "x^2 = 80\r
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\n" ); document.write( "\n" ); document.write( "x = sqrt(80) which is about 9 mm
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