document.write( "Question 1205147: The area of a rectangle is 12cm^2. Find the range of possible values of the width of the rectangle if the diagonal is more than 5cm. \n" ); document.write( "
Algebra.Com's Answer #841795 by math_helper(2461)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "This solution assumes the conventional meaning of width, W, to be the shorter side of the rectangle. The length, L, is taken to be the longer side.\r
\n" ); document.write( "\n" ); document.write( "The minimum diagonal of the rectangle will be when L = W = sqrt(12) (i.e. a square is formed). However, with these dimensions, the diagonal is only \"sqrt%2812%2B12%29+=+sqrt%2824%29+\" and that is less than the required 5cm.\r
\n" ); document.write( "\n" ); document.write( "Recall the 3-4-5 triangle:
\n" ); document.write( "If the length is set to 4cm, the width is then 12/4 = 3cm, and we get
\n" ); document.write( "D = diagonal = \"sqrt%284%5E2+%2B+3%5E2%29+=+sqrt%2825%29+=+5+\" as required.\r
\n" ); document.write( "\n" ); document.write( "Hence, \"+0+%3C+W+%3C+3+\" cm \r
\n" ); document.write( "\n" ); document.write( "( The length, L, has bounds \"+4%3CL+%3C+infinity\" ) \n" ); document.write( "
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