document.write( "Question 698752: The diagonal of a rectangle is 13cm. How long is its width if its length is 10cm? \n" ); document.write( "
Algebra.Com's Answer #431010 by vidya p(12)\"\" \"About 
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Solution :
\n" ); document.write( "Let ABCD is an rectangle ,
\n" ); document.write( "we know that all angles of an rectangle is an right angle,
\n" ); document.write( "Hence, the diagonal divides the rectangle in two right angled triangle.
\n" ); document.write( "Let take one right angled triangle, ABC
\n" ); document.write( "in which Angle B = 90 degree,
\n" ); document.write( "and diagonal AC = 13cm and AB = 10 cm
\n" ); document.write( "hence by using pythagorus theorem , we get :
\n" ); document.write( "Ac^2 = AB^2 + BC^2
\n" ); document.write( "13^2 = 10^2 + BC^2
\n" ); document.write( "BC^2 = 13^2 - 10^2
\n" ); document.write( "BC^2 = ( 13 - 10 ) ( 13 + 10)
\n" ); document.write( "BC^2 = 3 * 23
\n" ); document.write( "BC = sqrt ( 69) \r
\n" ); document.write( "\n" ); document.write( "Thanks ,
\n" ); document.write( "Best regards.\r
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