The following parallelogram has the perimeter of 26ft. Find x.
We know that the perimeter can be calculated by adding up all the side lengths together. The picture below shows all the side lengths of the parallelogram.
Logically, adding up all the side lengths together must result in 26ft. Hence:
Now, we can simplify the equation as shown:
To get a step closer in finding x, we add -16 to both sides of the equation. This is shown below:
Next, to find x, we divide both sides of the equation with 2:
Now, the calculated number, 5, has no meaning unless we include the unit for it. Since the perimeter is in feet, x will be in feet. Hence:
Therefore, the answer is D.
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