Prove that the 1 meter = 3.28ft Select an object, measure it using U.S. Units. Use a metric unit and remeasure the same object. Compare between what they calculated the length of the object to be (when converting from their US measurement ) and what they measure it to be using the metric ruler. Use the following equation to calculate how far off the two measurements are: Percent difference is equal to length measured minus length calculated divided by length measured.

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