Question 146588
{{{P=2W+2L}}} Start with the perimeter formula



{{{P=2W+2(28)}}} Plug in {{{L=28}}}



{{{P=2W+56}}} Multiply



{{{2W+56>100}}} Set the right side greater than 100



{{{2W>100-56}}} Subtract {{{56}}} from both sides.



{{{2W>44}}} Combine like terms on the right side.



{{{W>(44)/(2)}}} Divide both sides by {{{2}}} to isolate {{{W}}}. 



{{{W>22}}} Reduce.



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Answer:


So the answer is {{{W>22}}} 



So the width must be greater than 22 cm