Question 32024
Let the width be x:
28+x and 32+x
Equation:
(28-2x)(32-2x)=192
89-120x+4x^2=192
{{{4x^2-120x+704}}}
{{{x^2-30x+176}}}
Use the quardratic formula:
{{{x=(-(-30)+-sqrt((-30)^2-4*1*176))/2}}} -->Remove negative:
{{{x=(30+14)/2}}}
x=22
Hence, the unifrom width is 22cm.
Paul.