Find the perimeter of the rectangle. The other portion is a square.

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|8 sq |
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There is a vertical line on the 8 sq.

To find the perimeter of the rectangle, we need to add up the lengths of all four sides. In this case, we have two equal sides, which are the sides of the square, and two unequal sides, which are the sides of the rectangle.

First, let's find the length of the sides of the square. Since the square has a vertical line on one of its sides, we can see that the horizontal side of the square is also 8 units long. Therefore, both sides of the square measure 8 units.

Next, let's find the length of the unequal sides of the rectangle. From the given diagram, we can see that the horizontal side of the rectangle measures 20 units.

To calculate the perimeter, we add up all four side lengths: 8 + 8 + 20 + 20 = 56.

Therefore, the perimeter of the rectangle is 56 units.