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you are suppose to MULTIPLY on area.
You have to multiply to find area you have to add to find perimiter
for area you times width x length
To find the perimeter you add and to find the area we multiply.
To calculate the area you multiply the width times lenghth.the numbers that are on the side of the shape multiply them and you'll get the area. Now to get the perimeter you add the numbers on the sides together. Add lenght times width.that's how you get your perimter and area.