Find the perimeter of the following parallelogram.
To find the perimeter, we just need to add all the side lengths together. The picture below shows all the side lengths of the parallelogram:
Let the perimeter be P. By adding all the side lengths, we have:
Now, the calculated number, 22, has no meaning unless we include the unit for it. Since the sides are in centimeter, the perimeter will also be in centimeter. Hence:
Clearly, the answer is A.
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