Question 40364
 length --> 18-x-x->18-2x
 width --> 14-x-x->14-2x
EQUATION:
(18-2x)(14-2x)=192
{{{4x^2-64x+252=192}}}
{{{x^2-16x+15=0}}}
{{{x = (-(-16) +- sqrt( (-16)^2-4*1*15 ))/(2*1) }}} 
x=15 or x=1
Hence, the unifrom width is 1 cm.
Paul.