Answer
length is 72 feet, width is 40 feet
Work Step by Step
$l+2w=152$
$w=1/2*l+4$
$l+2w=152$
$l+2*(1/2*l+4)=152$
$l+l+8=152$
$2l=144$
$2l/2=144/2$
$l=72$
$l+2w=152$
$72+2w=152$
$2w=80$
$2w/2=80/2$
$w=40$
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