Question 931933
Too common type of exercise.


w and L dimensions.


{{{system(L=-5+2w,2w+2L=116)}}}


{{{system(L=2w-5,w+L=58)}}}


{{{w+2w-5=58}}}

{{{3w=58+5}}}


{{{3w=63}}}


{{{highlight(w=21)}}} and you can find L.