Answer:
32 meters
Step-by-step explanation:
The question gives measurements in different units. We need to make them the same.
Convert 400 centimeters into meters by dividing 400 by 100.

400 centimeters is 4 meters.
Formula for finding the perimeter of a rectangle:

<em>4 meters is the width and 12 meters is the length. </em>
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The perimeter of the rectangle should be 32 meters.