A person who weighs 125 pounds weighs approximately __ kilograms.
The correct Answer and Explanation is:
To convert pounds to kilograms, you can use the conversion factor that 1 pound is approximately equal to 0.453592 kilograms. Therefore, to convert 125 pounds to kilograms, you can multiply the number of pounds by this conversion factor.
Conversion Calculation
[
\text{Weight in kilograms} = \text{Weight in pounds} \times 0.453592
]
[
\text{Weight in kilograms} = 125 \text{ pounds} \times 0.453592 \text{ kg/pound}
]
Calculating this gives:
[
\text{Weight in kilograms} \approx 125 \times 0.453592 \approx 56.699 \text{ kg}
]
Rounding to two decimal places, a person who weighs 125 pounds weighs approximately 56.70 kilograms.
Explanation of the Conversion Process
- Understanding the Units: Weight can be measured in various units, with pounds (lbs) and kilograms (kg) being two of the most commonly used. Pounds are primarily used in the United States, while kilograms are used in most other countries as part of the metric system.
- Conversion Factor: To convert between these units, it’s crucial to know the correct conversion factor. The factor of 0.453592 kg for every pound is derived from the definition of a kilogram in relation to the pound.
- Multiplication: The process involves multiplying the number of pounds by the conversion factor. This method is straightforward and works for any weight conversion. For example, if someone weighs 200 pounds, you would calculate 200 × 0.453592 to get approximately 90.72 kg.
- Significance of the Metric System: The metric system, which includes kilograms as a unit of mass, is based on powers of ten, making it easier for scientific calculations and international communication. Understanding how to convert between pounds and kilograms is essential for healthcare professionals, scientists, and anyone working in a global environment.
By converting weights into a standard unit, such as kilograms, it facilitates better understanding and communication of weight measurements worldwide.