American Board of Ophthalmology (ABO) Practice Exam

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How many inches are in 0.5 meters?

  1. 15.7

  2. 19.7

  3. 20.5

  4. 24.9

The correct answer is: 19.7

To convert meters to inches, a common conversion factor is used: 1 meter is equal to approximately 39.37 inches. To find out how many inches are in 0.5 meters, the calculation would be: 0.5 meters × 39.37 inches/meter = 19.685 inches. When rounded to one decimal place, this result is approximately 19.7 inches. Therefore, the choice that indicates 19.7 is the correct answer, as it accurately reflects the conversion from meters to inches for the given measurement. This understanding of unit conversion is important in various scientific and medical applications, including ophthalmology, where precise measurements are often necessary.