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The question cannot be answered unless you assume that

  • the shape is rectangular, and
  • the two measurements are in the same units

although there are no grounds for assuming so.

In that case, the perimeter is 2*(2.5 + 2) = 9 units of length and area = 2.5*2 = 5 square units.

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Q: What does 2.5 long and 2 in width in perimeter and area?
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