Answer
$abs(18.55-l) \leq.05$ (length)
$abs(36.75-w) \leq.05$ (width)
$18.5 \leq l \leq 18.6$
$36.7 \leq w \leq 36.8$
Work Step by Step
$abs(18.55-l) \leq.05$
$abs(36.75-w) \leq.05$
$abs(18.55-l) \leq.05$
$18.55-l\leq.05$ and $18.55-l\geq -.05$
$18.55-l\leq.05$
$18.55-l+l-.05\leq.05+l-.05$
$18.5 \leq l$
$18.55-l\geq -.05$
$18.55-l+l+.05\geq -.05+l+.05$
$18.6 \geq l$
$abs(36.75-w) \leq.05$
$36.75-w\leq.05$ and $36.75-w\geq -.05$
$36.75-w\leq.05$
$36.75-w+w-.05\leq.05+w-.05$
$36.7 \leq w$
$36.75-w\geq -.05$
$36.75-w+w+.05\geq -.05+w+.05$
$36.8 \geq w$