Step 1. Perimeter Pmeans adding up all the sides. So let's take a rectangle as an example which means adding up all four sides of a rectangle.
Step 2. Let w be the width of a rectangle.
Step 3. Let L be the length of a rectangle.
Step 4. ANSWER: Then the Perimeter P= w+w+L+L=2w+2L for a rectangle.
I hope the above steps were helpful.
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