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4-99.

Find the perimeter of the figure at right.  

An enclosed figure as follows, starting at the top left:  Right, 2 inches, down, unknown, right, 4 inches, down, 4 inches, left, unknown, up, 6 inches, enclosing the figure.

Remember, perimeter is the total length of all the sides of a shape.

What are the missing lengths for the sides of the shape? Try to fill these in and sum up each side length to get the perimeter.

 in.

Make sure you can justify your answer.

Label, question mark, added to the unknown sides.