<span> Perimeter <em>p</em> means adding up the four sides of a rectangle.
Step 2. Let <em>w</em> equal the width.
Step 3. Let <em>w+3</em> equal the length.
Step 4. Then you'll have this really confusing equation: P=w+w+w+3+w+3=4w+6=30
And it will give you <em>w= 6</em>
</span>
It has 18 number of edges